goin to pick up my 05' LLY tommorow, and wondered about the overheating issues?? if it happens more often then not. and what the fix is??

GOOD QUESTION......... I just got my first DuraMax about 6 months ago, and it's a 2005 also! I'll be watching this thread very carefully!!
:thumb::thumb:

Do a search for overheating LLY's and you will end up reading til your eyes bleed

This past summer, I saw my temp gage shoot up real fast, a couple of times, during the heat of the summer, towing 7500lbs, going up hills, the fan kicked in and got things under control.....with a lot of noise!
The cure and solution, from what I have read and re-read on the forum here, is the v2 solution! I am going to order from Cool My duramax, a supporting vendor, the whole enchilada, here is a link...
The Whole Enchilada (http://www.coolmyduramax.com/joomla/index.php?page=shop.product_details&flypage=shop.flypage&product_id=21&category_id=10&manufacturer_id=0&option=com_virtuemart&Itemid=30)

I AM GOING TO CLIMB AND CONQUER THE ROCKY MOUNTIANS THIS SUMMER.

Ron

Like Ron said, http://www.coolmyduramax.com is the site for LLY overheating solutions. Check the left side of the page for the forum also.

Dang!! $930 !!!! for the V2 thing....i sure hope mine aint one of the overheaters!!! and iam sure labor on that thing aint cheap either...

i have no problem with over heating towing up to 7500lbs in the middle of the summer. i think most of the problems when the weight was alot higher

1BAD06PSD...read through all the mods, DIY section, and check out my simple mod in "my garage" for just a few bucks!!!

It depends how you pull. IMHO all lly's will overheat given the right conditions. These conditions include high wind drag load, big weight, long grades, and outside air temps above 80. The V2 from the coolmyduramax.com is the only proven solution. My advice is pull the load you pull and see how it does. Also search lly overheat and you will find lots of info. Days and days worth.

Good luck. You will love your lly. If it gets hot it can be solved.

sodfarmerIt depends how you pull. IMHO all lly's will overheat given the right conditions. These conditions include high wind drag load, big weight, long grades, and outside air temps above 80.

That is a pretty bold and inaccurate statement. I have pulled in all types of conditions towing over 11k. I have never experienced any overheating issues in the 3 years I have owned my truck. Here in CA we have long steep grades in the middle of the desert along with high winds, never had a problem.

That is a pretty bold and inaccurate statement. I have pulled in all types of conditions towing over 11k. I have never experienced any overheating issues in the 3 years I have owned my truck. Here in CA we have long steep grades in the middle of the desert along with high winds, never had a problem.

Is it a high wind drag load? 12 ft or above? The wind drag is a bigger issue than weight. My statement is accurate. I did not say all will overheat the way you use them. However get them to max weight and height pulling steep grades in temps 80 and above and they will heat.

Just my experience. Take it for what it is worth.

I pull a 12,000 lb fifth wheel in 100 degree heat up hills with the cruise, and the air on.My truck is one of those overheating lly's, that has never even tried to overheat. fan comes on when approaching a stop sign, annoying yes but it keeps my truck from overheating. Try not to become a member of the lly overheat doom and gloom club, not very likely you will have a problem.

That is a pretty bold and inaccurate statement. I have pulled in all types of conditions towing over 11k. I have never experienced any overheating issues in the 3 years I have owned my truck. Here in CA we have long steep grades in the middle of the desert along with high winds, never had a problem.


Have you monitored your temps with your predator while climbing in the heat with a good size load behind you? If so, what were the temps?

I wonder if TX still has money on the table for the nonbelievers?

I pull a 12,000 lb fifth wheel in 100 degree heat up hills with the cruise, and the air on.My truck is one of those overheating lly's, that has never even tried to overheat. fan comes on when approaching a stop sign, annoying yes but it keeps my truck from overheating. Try not to become a member of the lly overheat doom and gloom club, not very likely you will have a problem.

You are already a member. Membership is included in the purchase of an 04.5-05 lly:D. Sorry I couldn't help myself.

Heaviest mine pulls is about 8,000 lbs, up a fairly steep grade maybe 7-8 miles long. With the Edge on 3, Attitude monitor would reach 207* and that was it. This is summertime at 6,000-7000' elevation.

A friend put 120K hard miles on his completely stock '05, mostly towing a 24' cattle trailer all over Texas. Loaded weight on that trailer is 19,500 lbs. and summer temps are often 105-110*. His LLY never once overheated.

Have you monitored your temps with your predator while climbing in the heat with a good size load behind you? If so, what were the temps?

I wonder if TX still has money on the table for the nonbelievers?


I always monitor my temps towing, always use the Pred while towing. My toyhauler is near 12k loaded and truck bed is usually full of fire wood. Never over 210* I've towed in all conditions. If anything was going to put it over was when I took a trip out to Pismo a couple of summers ago. Predator at 40hp, outside temp near 100*, AC on, and some long steep grades. Never ran hot, I like to maintain 65mph so I definitely had some foot in the pedal on the grades.

I always monitor my temps towing, always use the Pred while towing. My toyhauler is near 12k loaded and truck bed is usually full of fire wood. Never over 210* I've towed in all conditions. If anything was going to put it over was when I took a trip out to Pismo a couple of summers ago. Predator at 40hp, outside temp near 100*, AC on, and some long steep grades. Never ran hot, I like to maintain 65mph so I definitely had some foot in the pedal on the grades.
I would contact TxChristopher and go get your money then. He has $5,000 for anyone that can produce a stock LLY that will not overheat under the right conditions. (all conditions are within the trucks rated towing capacities and driving on normal highways just maintaining speed limits, or close too) Sounds like you have some easy money in your future... BTW, I think the test route is in Az. so I look forward to meeting you and seeing the golden LLY myself.

Heaviest mine pulls is about 8,000 lbs, up a fairly steep grade maybe 7-8 miles long. With the Edge on 3, Attitude monitor would reach 207* and that was it. This is summertime at 6,000-7000' elevation.
What's the OAT when you are at 7,000 ft during the summer in Utah? In Arizona it's only mid 70's...

A friend put 120K hard miles on his completely stock '05, mostly towing a 24' cattle trailer all over Texas. Loaded weight on that trailer is 19,500 lbs. and summer temps are often 105-110*. His LLY never once overheated.
Can you post a picture of this high profile cattle trailer? I've never seen one. :rolleyes:

don't worry about the overheating issue, just tow what you are supposed to and you will be fine.

goin to pick up my 05' LLY tommorow, and wondered about the overheating issues?? if it happens more often then not. and what the fix is??
Most people won't put the right combination together to get the LLY to overheat. Odds are you will be fine. If not, there is a fix. Enjoy your new truck.

don't worry about the overheating issue, just tow what you are supposed to and you will be fine.
:confuzeld Care to elaborate?

I don't know about it being the golden LLY, but there's no reason to BS anyone. If my truck had overheating issues, I would've been the first person to trade it in for another truck. I have a buddy with a LLY dually, tows a large goose neck trailer to all of his boat races. One is in AZ and he also goes to Havasu quite a bit. Never heard of him complain about his truck overheating.

Sure you hear about people having issues here on the boards, that's the reason most found this site in the first place. How many thousands of people are driving LLY's and never had an issue with their truck. Probably a lot and most don't visit an internet site like this.

I don't know about it being the golden LLY, but there's no reason to BS anyone. If my truck had overheating issues, I would've been the first person to trade it in for another truck. I have a buddy with a LLY dually, tows a large goose neck trailer to all of his boat races. One is in AZ and he also goes to Havasu quite a bit. Never heard of him complain about his truck overheating.

Sure you hear about people having issues here on the boards, that's the reason most found this site in the first place. How many thousands of people are driving LLY's and never had an issue with their truck. Probably a lot and most don't visit an internet site like this.
You are right. Most people will never see their LLY overheat, but most people won't put the right combination together of high OAT and constant load on the motor. (i.e. weight, wind drag, hills)
If you really have a LLY that won't overheat, why not drive a few hours, drag a trailer around a little, collect your $5,000 and go home?

Here is what we know. The LLY engine can and will produce more heat, when under constant load, than the cooling system for the LLY can shed in high OAT's. Period.
Does your LLY overheat? Depends on how and where it's used.
WILL your LLY overheat? Yes, unless it was somehow manufactured different on the standard assembly line that is designed to make sure that all products come out the same.

How many people have gone and tested their trucks under these conditions?

How many people have gone and tested their trucks under these conditions?


I do every summer on my way to Utah.

I also tow under those circumstances described. (I am however within my tow cap) I'm talking about how many people have challenged TxChristopher in the proof of a LLY that will not overheat. People with a truck such as mine that have never seen a hint of overheating.

I also tow under those circumstances described. (I am however within my tow cap) I'm talking about how many people have challenged TxChristopher in the proof of a LLY that will not overheat. People with a truck such as mine that have never seen a hint of overheating.
To date, no one has stepped up to the challenge. The money has been on the table for 3 years now and no-one has come to pick it up. It's easy money if yours is the one...
Do you really believe that yours was mass produced different than all the others were mass produced?:rolleyes:

I also tow under those circumstances described. (I am however within my tow cap) I'm talking about how many people have challenged TxChristopher in the proof of a LLY that will not overheat. People with a truck such as mine that have never seen a hint of overheating.


Have you monitored your temps with anything other then the stock gauge? I bet you are getting hotter then you think.

To date, no one has stepped up to the challenge. The money has been on the table for 3 years now and no-one has come to pick it up. It's easy money if yours is the one...
Do you really believe that yours was mass produced different than all the others were mass produced?:rolleyes:

Don't believe mine was produced any different than others. Some trucks have problems some don't, they are all built the same. You're being foolish to say that all LLY's overheat. That is like saying ALL Gearbox toy haulers delaminate,they don't. (See RV.net) Like saying all Weekend Warriors are built like crap, they're not.(See rv.net and glamisdunes.com) They make it seem like all are bad.

People here on Dieselplace. only represent a tiny % of Chevy owners.
Like ownership on those other web sites represents a small % of units sold.

Don't believe mine was produced any different than others. Some trucks have problems some don't, they are all built the same. You're being foolish to say that all LLY's overheat. That is like saying ALL Gearbox toy haulers delaminate,they don't. (See RV.net) Like saying all Weekend Warriors are built like crap, they're not.(See rv.net and glamisdunes.com) They make it seem like all are bad.

People here on Dieselplace. only represent a tiny % of Chevy owners.
Like ownership on those other web sites represents a small % of units sold.

I will ask again. Have you monitored your temps with a guage other then the stock gauge? If so, what's the highest temp you saw while climbing in high ambient temps up a long grade with a decent size trailer. I don't think that statement is foolish at all considering the 10,000+ posts on this subject.

What's the OAT when you are at 7,000 ft during the summer in Utah? In Arizona it's only mid 70's...

Can you post a picture of this high profile cattle trailer? I've never seen one. :rolleyes:

Summer temp can be anywhere from 70's to 90's. The air is thin up here.

No, I can't post a picture of his trailer. He's in Texas, I'm in Utah, and why would I want to have taken a picture anyway? He had that thing custom built probably 25 years ago. It's not particularly high profile, it just holds a lot of cows or horses. If you haven't seen one, then you just haven't seen one....so cut the roll-your-eyes crap.

I have to agree, all LLys will overheat if you push them. Different people tow different loads at different speeds.

Case in point, our two Lillys have both been overheaters, we push our trucks. My frind swore up and down that his truck does not (and would not) overheat (37 ft toybox 5th wheel).

I made him a gentlemans wager, and we took off, me driving his truck, not more than 15 minutes in, he admitted defeat.

Moral of the story: If the way YOU drive YOUR truck, it doesn't over heat, GOOD FOR YOU! That does not mean that you have a special truck, or any of us are lying to you. All of these trucks with a big load, and high oat WILL overheat.

Later

Zack

I will ask again. Have you monitored your temps with a guage other then the stock gauge? If so, what's the highest temp you saw while climbing in high ambient temps up a long grade with a decent size trailer. I don't think that statement is foolish at all considering the 10,000+ posts on this subject.


Yes, It is a stock gauge. Isn't that what most overheaters are using to gauge their temps. I found the overheat thread and of the 10k post it is mostly the same people going back and forth within the topic. It doesn't represent the population on a whole.

Duning Chevy,

I tow at or near capacity and Yes, I do drive my truck.

SLEEZ, I truly hope that you have a truck that doesn't overheat, thats awesome. All you have to do is prove it, and no one on dieselpace will ever question that again. Not to mention the extra cash!

As an aside, I can drive my truck with our 40' 5th wheel and make it not overheat. I have to keeop the RPMs low and be careful. It is my opinion that those not seeing high ECTs are simply driving that way by habit or luck, whatever the case.

I would love to see your truck not overheat, it would make my day, and I'm sure that money is burning a hole in TXChris' pocket right now LOL

Yes, It is a stock gauge. Isn't that what most overheaters are using to gauge their temps. I found the overheat thread and of the 10k post it is mostly the same people going back and forth within the topic. It doesn't represent the population on a whole.

Duning Chevy,

I tow at or near capacity and Yes, I do drive my truck.
We are not saying your truck does not overheat under the conditions you apply to it. My friend had an 05 and towed an equipment trailer weighing almost 20k lbs. and never overheated. Hooked up his 30 foot high profile RV and was puking coolant everywhere even though it weighed a lot less.

If you are so sure your truck will not overheat within the weight limits Chevy specs them out too, then take the $5000 bet. Why wouldn't you?? Seems like the easiest bet you will ever win...

Honestly, we could argue for ever on this topic. With that being said, I'm glad your truck doesn't overheat for you. Next time you tow at capacity this summer make sure to plug in your predator and monitor ECT while climbing a long grade in the heat. I promise you that the temps you will see will make you a bit uncomfortable. Good luck.

Honestly, we could argue for ever on this topic. With that being said, I'm glad your truck doesn't overheat for you. Next time you tow at capacity this summer make sure to plug in your predator and monitor ECT while climbing a long grade in the heat. I promise you that the temps you will see will make you a bit uncomfortable. Good luck.

Exactly, I'll hook it up and take a look this summer.

My trailer is a tag not a 5ver and have never towed a 5ver with it, so I can't give any temp #'s in that regard.

Don't believe mine was produced any different than others. Some trucks have problems some don't, they are all built the same. You're being foolish to say that all LLY's overheat. That is like saying ALL Gearbox toy haulers delaminate,they don't. (See RV.net) Like saying all Weekend Warriors are built like crap, they're not.(See rv.net and glamisdunes.com) They make it seem like all are bad.

People here on Dieselplace. only represent a tiny % of Chevy owners.
Like ownership on those other web sites represents a small % of units sold.
You say I'm being foolish to think that all LLY's will overheat.
I'm saying I think you are being foolish to think they won't. (under the right conditions that are still within rated GM capacities)
I hope we can agree to disagree. I understand what you are saying about forums, but many non-believers have had to eat crow when they upgrade their trailer to a high profile 5er or tow out west during the summer for the first time. These are the conditions I pull in everytime I hook up all summer long. I'm very familiar with what it takes to OH a LLY. I had one.
If your truck doesn't overheat under the conditions you drive it, good! But I still think it will and if you want to PROVE it won't, there is $5,000 waiting for you, and a whole lot of people that would love to hear and see the story.
Nothing against you, but until you can prove that you have the mythical non-overheater LLY, I'll agree to disagree with you.

Exactly, I'll hook it up and take a look this summer.

My trailer is a tag not a 5ver and have never towed a 5ver with it, so I can't give any temp #'s in that regard.
There is the answer. Most tag trailer will not have a very high profile. Generally they are all the same height.

Glad it works for you. That is all that matters. :D

Jason

Hey Dave, clear your box. J.P.

wow talk aobut beating a dead horse. So some of us have never overheated our lly's. there are thousands of llys on the road that will never overheat. I can make any vehicle on the road right now overheat if I wanted to, as you guys say "under the right conditions", well that could be anything, low on coolant, plugged radiator, bad thermostat, etc. etc..When you pull a heavy trailer you have to drive different than driving empty. you have to feel what the truck does not really want to do. If you are pulling a long grade in high temps back off a little. Some of you guys just kill me with all of this overheating crap, man you people that have chronic overheaters are a very very small percentage of lly owners. It also seems to me that alot of you have programmers, which is ok, but how do you suppose you make all that extra power?? It feeds the engine more fuel than it was designed for, which will make more heat. This forum is supposed to help people exchange imformation, but every time the overheating thread comes up it is the same people pissing and moaning, man get over it

wow talk aobut beating a dead horse. So some of us have never overheated our lly's. there are thousands of llys on the road that will never overheat. I can make any vehicle on the road right now overheat if I wanted to, as you guys say "under the right conditions", well that could be anything, low on coolant, plugged radiator, bad thermostat, etc. etc..When you pull a heavy trailer you have to drive different than driving empty. you have to feel what the truck does not really want to do. If you are pulling a long grade in high temps back off a little. Some of you guys just kill me with all of this overheating crap, man you people that have chronic overheaters are a very very small percentage of lly owners. It also seems to me that alot of you have programmers, which is ok, but how do you suppose you make all that extra power?? It feeds the engine more fuel than it was designed for, which will make more heat. This forum is supposed to help people exchange imformation, but every time the overheating thread comes up it is the same people pissing and moaning, man get over it
My LLY would overheat completely stock, pulling within it's rated capacities with everything where it was supposed to be. (coolant levels etc.) no funny business. Believe me, when you have your family in tow with little ones in the back seat, the last thing you want to do is overheat your truck. I did everything I could to keep my truck from overheating which included backing off the throttle (within reason, keep in mind the road I had the most problem with is a 65 MPH road and I didn't want to get rear-ended either is trying to do 35 in a 65 pushing it too hard?) during the summer when it was 100+ outside we were climbing the hills with our windows down, A/C off, and the heater on full blast! That's fun with the wife and kids.
You say when you pull a heavy trailer you have to drive different? That's only if you own a LLY. LB7's, LBZ's, dodges and fords of various motor generations could all do what my LLY couldn't without overheating.
Where do you live and what do you pull?

I live in Iowa, and I pull a 12,000 lb fifth wheel, I have pulled it out west many times, including Arizona, California, New Mexico in 100 degree plus heat up some pretty good grades. My fifth wheel camper is very tall in the front, not very aerodynamic, so it pushes alot of wind creating alot of drag, and never had it overheat on me.You say that all lb7's lbz's dodges, and fords can do what your lly can do without ovrheating, I say b.s.. Have you drove some of the dodge or ford diesels, and really worked them. They do not even compare.I have, and they are more sluggish under a heavy load, and if you get where it is cold, they don't want to start without being plugged in, the reason I know is that I halp a farmer out in my spare time, and he has a 2005 dodge diesel 2500, and a 2004 ford diesel 3500, and my dmax would easily out perform them under a heavy load. So maybe if the grass is so much greener on the other side, maybe you should jump the fence, and so how green it really is. IMHO

At what temp would you classify a truck as an overheater? My truck gets to 210 very quickly just idling. I always thought it was made to warm up quickly? Am I wrong? At 70 down the highway no load should I be running at 210?

-Welder:confused:

Just FYI, our LBZ will get to 235 or 240, but when the fan kicks on it actually cools down. Thats the difference.

WELDER, 210 is not overheating, you get over 235 or so, and you should probably back off the go-pedal.

I live in Iowa, and I pull a 12,000 lb fifth wheel, I have pulled it out west many times, including Arizona, California, New Mexico in 100 degree plus heat up some pretty good grades. My fifth wheel camper is very tall in the front, not very aerodynamic, so it pushes alot of wind creating alot of drag, and never had it overheat on me.You say that all lb7's lbz's dodges, and fords can do what your lly can do without ovrheating, I say b.s.. Have you drove some of the dodge or ford diesels, and really worked them. They do not even compare.I have, and they are more sluggish under a heavy load, and if you get where it is cold, they don't want to start without being plugged in, the reason I know is that I halp a farmer out in my spare time, and he has a 2005 dodge diesel 2500, and a 2004 ford diesel 3500, and my dmax would easily out perform them under a heavy load. So maybe if the grass is so much greener on the other side, maybe you should jump the fence, and so how green it really is. IMHO
I'm not camparing dodge and ford to chevy in any other way (in this thread) than pulling a big load up a large grade in high OAT and what temp the motor goes to.
Fact - My LLY (stock) would overheat repeatedly. My LBZ (stock) would not pulling the same grade with the same weight and same OAT.
Fact - My neighbors '05 Dodge Cummins (comparably equiped to my old LLY with body configuration, 4x4, etc) could pull my trailer up the same grade my LLY would OH on a high OAT day and the temp gauge would not move!
Fact - while I was sitting on the road puking coolant, I saw countless Fords passing by with similar size/weight trailers not spewing coolant.
Fact - I have a friend who had a Ford 7.3 and pulled a 40' WW like mine without problem. Then switched to a '05 Kodiak with LLY and now has heat issues pulling the same grades with the same trailer.

Don't get me wrong. I don't think those other trucks are better. I love my chevy. But the question from the OP was about the OH problem with the LLY and I'm telling you it's real. I've dealt with it and so have lots of other people and if you think your stock LLY won't OH then you are kidding yourself. You may never put it in a situation where it will and that's fine. But they all will if the right combo is put into place. I've seen it too many times to think otherwise. If you have the one that won't, call TxChristopher... he has $5,000 waiting for you. It'll just cost you a trip to Az. I'll even follow behind you on the test route and bring extra dexcool. You'll need it.

At what temp would you classify a truck as an overheater? My truck gets to 210 very quickly just idling. I always thought it was made to warm up quickly? Am I wrong? At 70 down the highway no load should I be running at 210?

-Welder:confused:
It's not about what temp I think is overheating. GM has already specified this in all our trucks. You'll know when you get there because the DIC will read "engine overheated" and all kinds of bells will be going off and your engine will have no power, the A/C won't work... it's a real treat on a nice hot summer day with your family in tow. Makes you feel like you really got your monies worth out of your 40K+ truck.

Just FYI, our LBZ will get to 235 or 240, but when the fan kicks on it actually cools down. Thats the difference.

Exactly. My LBZ got up to 240 also before I put the V2 on it. The big difference here is that the LBZ engine fan can turn around the temps. The LLY CANNOT! When the engine fan is roaring full boar and the engine temp is continuing to climb, you are producing more heat than the cooling system can shed. Given enough time, the truck will overheat. No two ways about it. When you still have 7 miles of hill left... yeah, it's gonna be a bad day.

For people that live in areas that don't have real hills, bring your LLY and try pulling 14K lbs of high profile trailer, up these grades at anywhere near the posted speed limit of 65MPH during tripple digits OAT's. Let me know if you want to try it, I'll bring the dexcool.
The hills below 5500 ft are in tripple digits all summer.
http://i124.photobucket.com/albums/p40/r3df3ath3r/V2/1theroute.jpg

I've got the same kind of hills. We pull from San Diego, up and over Crestoowd Summit down to imperial valley. Temps are easily triple digit in summer, and the trucks will overheat easy.

I live in Iowa, and I pull a 12,000 lb fifth wheel, I have pulled it out west many times, including Arizona, California, New Mexico in 100 degree plus heat up some pretty good grades. My fifth wheel camper is very tall in the front, not very aerodynamic, so it pushes alot of wind creating alot of drag, and never had it overheat on me.You say that all lb7's lbz's dodges, and fords can do what your lly can do without ovrheating, I say b.s.. Have you drove some of the dodge or ford diesels, and really worked them. They do not even compare.I have, and they are more sluggish under a heavy load, and if you get where it is cold, they don't want to start without being plugged in, the reason I know is that I halp a farmer out in my spare time, and he has a 2005 dodge diesel 2500, and a 2004 ford diesel 3500, and my dmax would easily out perform them under a heavy load. So maybe if the grass is so much greener on the other side, maybe you should jump the fence, and so how green it really is. IMHO


25 posts says it all. Start reading and get clued in! Better yet since you claim to have a mythical "non overheater" Take the challenge and pick up 5 grand from Tx Christopher. Shit or get off the pot PERIOD.

Have you monitored you temps with a guage other then the stock one?
If you haven't then you really have no clue as to just how hot your lly is really getting. You know what, this subject is beat to death and it is already proven on this board that ALL LLY's WILL OVERHEAT IN THE RIGHT CONDITIONS. I have more elevation in my driveway then you see in the whole state of Iowa. Give me a break. TAKE THE TX CHRISTOHPER CHALLENGE THEN COME BACK AND BEAT YOUR CHEST IF YOU CAN!

25 posts that is correct turbobruce I guess you joined 8 months before I did so you must really be an expert lol, I have been on here reading some so called experts like yourself spreading your doom and gloom to new d max owners, and I decided to start posting my experiences with my dmax, seeing how I use it daily to pull 10,000 lb plus trailers DAILY. And with as many posts as you have turbobruce, I would of thought you could read a little better than that, I stated that I have pulled my fifth wheel to many western states including California, and at no time have I stated that my truck will not overheat, I stated that I work it hard, and it never has, so maybe you should get clued in. so come out east city boy, and we I will show you how you work your truck.
and I believe the post was about how common overheating llys are. well if the hills in the nice fancy graph will make your truck overheat, then how common are hills like that??

:banghead: I run the piss out of my NO OVER HEATING D-MAX and I just love it!!!!!!!!!!!!!!!!!!

25 posts that is correct turbobruce I guess you joined 8 months before I did so you must really be an expert lol, I have been on here reading some so called experts like yourself spreading your doom and gloom to new d max owners, and I decided to start posting my experiences with my dmax, seeing how I use it daily to pull 10,000 lb plus trailers DAILY. And with as many posts as you have turbobruce, I would of thought you could read a little better than that, I stated that I have pulled my fifth wheel to many western states including California, and at no time have I stated that my truck will not overheat, I stated that I work it hard, and it never has, so maybe you should get clued in. so come out east city boy, and we I will show you how you work your truck.
and I believe the post was about how common overheating llys are. well if the hills in the nice fancy graph will make your truck overheat, then how common are hills like that??

:banghead: I run the piss out of my NO OVER HEATING D-MAX and I just love it!!!!!!!!!!!!!!!!!!




I think I already summed this up in my post on page 2. See below.

Most people won't put the right combination together to get the LLY to overheat. Odds are you will be fine. If not, there is a fix. Enjoy your new truck.

25 posts that is correct turbobruce I guess you joined 8 months before I did so you must really be an expert lol, I have been on here reading some so called experts like yourself spreading your doom and gloom to new d max owners, and I decided to start posting my experiences with my dmax, seeing how I use it daily to pull 10,000 lb plus trailers DAILY. And with as many posts as you have turbobruce, I would of thought you could read a little better than that, I stated that I have pulled my fifth wheel to many western states including California, and at no time have I stated that my truck will not overheat, I stated that I work it hard, and it never has, so maybe you should get clued in. so come out east city boy, and we I will show you how you work your truck.
and I believe the post was about how common overheating llys are. well if the hills in the nice fancy graph will make your truck overheat, then how common are hills like that??



I think you said it best Dave(blksmok). I will leave this one alone.

Well done, Turbo.... (editing that post)

This was getting out of hand..:cool2:

I go out of town for one day and all this crap happens!!

:banghead:

Is it June???? Wow, it's only Feburary and all this M****ing everyone already:rolleyes:

It's been 3+ years. If you don't work your LLY hard enough to OH it by now, good for you. Get on with your life. Those that do, there's a fix. It's #1 in my sig.

Have a nice day....:D Back to hunting for me:)

Well done, Turbo.... (editing that post)

This was getting out of hand..:cool2:


I hear ya. I'm getting ready to go camping as we speak. I'm going fishing with the family. No time to argue old news.

I go out of town for one day and all this crap happens!!

:banghead:

Is it June???? Wow, it's only Feburary and all this MFing everyone already:rolleyes:

It's been 3+ years. If you don't work your LLY hard enough to OH it by now, good for you. Get on with your life. Those that do, there's a fix. It's #1 in my sig.

Have a nice day....:D Back to hunting for me:)

I too have been out of town and I cannot believe where this thread has gone.

Many who believe that their trucks will not overheat are in for a rude awakening someday. All it takes is for the conditions to be right on one day with even a small load and the water temperatures will soar. This past May I was pulling my 34 ft gooseneck flat bed that weighs 7800 lbs empty north out of St George, Utah when lo and behold I see water temps at 245. 245 and I am not even pulling 10,000 lbs and the outside air temp was only 90. Had I not pulled my foot out I would have overheated my truck. I pulled the same route later in the summer and had no problems, but for some reason that day it got hot.

I just hope the day never comes for those who refuse to believe their truck will overheat given the right conditions.

Just my $.02

I too have been out of town and I cannot believe where this thread has gone.

Many who believe that their trucks will not overheat are in for a rude awakening someday. All it takes is for the conditions to be right on one day with even a small load and the water temperatures will soar. This past May I was pulling my 34 ft gooseneck flat bed that weighs 7800 lbs empty north out of St George, Utah when lo and behold I see water temps at 245. 245 and I am not even pulling 10,000 lbs and the outside air temp was only 90. Had I not pulled my foot out I would have overheated my truck. I pulled the same route later in the summer and had no problems, but for some reason that day it got hot.

I just hope the day never comes for those who refuse to believe their truck will overheat given the right conditions.

Just my $.02


You really need to get over it. My truck towing my tag which is over 11k and measures in at over 12ft in height has never overheated. I've towed all the major grades here in Calif. in all conditions. Heat and strong head winds. My truck will not overheat with my set up. Enough said! If you are having OH problems with that minimal set up, then yes, you have a problem.

Guys, agree to disagree.;)

goin to pick up my 05' LLY tommorow, and wondered about the overheating issues?? if it happens more often then not. and what the fix is??

. . . thread started 1/30/08 . . . all this in 2 days!!

The argument of whether or not all the LLY's overheat might not matter as much as the fact that ENOUGH overheat (or get way hotter than they should) that to answer the original question . . .

Yes, MANY have problems.
If you have a problem, there is a fix called the V2.

Is there a basic problem with the LLY cooling? I haven't checked but I don't think there's a discussion, and certainly not these reactions, like this over in the LB7 section.

I have a Windows pc that NEVER crashes. EVER. I use it ten hours a day every day. I have run every kind of software on it you can think of on Windows for 15 years, it has never crashed.

I don't care what everyone says about Windows, MINE has NEVER crashed and it NEVER will. Just because YOURS has crashed, and everyone else's that you ever met does too, mine DOES NOT.

Anyone that says Windows pc's crash is full of shit.

Wow! You're how old? Grow up.

Wow! You're how old? Grow up.

This is the best you have? I would have expected someone going by the name "SLEEZ" to come up with better. Here I thought I was the one old enough and mature enough to actually have my name in my identity. :D

Are you saying I am wrong about Windows? You should come down south, here in Texas we run our pc's hard, and they don't crash. Don't be a hater simply because your POS Windows pc's may have crashed and mine doesn't.

Oh, and for the record, I currently have 5 laptops running Windows and I have 5 workstations and 2 servers running windows at the office, so I know a thing or two about Windows.

And Windows has what to do with the topic of this thread?

Like I said, "Grow up and quit trying to be internet tough guy."

You're actually a vendor here on the board with such a s****y attitude.

I don't recall saying anything directly to you, so who is trying to be the tough guy? You trying to call me out?

Since you seem really immature and very slow to catch on, I will help you:

It doesn't matter what anyone tells you, you believe what you believe and thats that. Some people still think we have never been to the moon, no matter if they can see the lunar rover from a telescope or not. You can't convince them. Some people say there were never dinosaurs on Earth, no way could they be older than the bible or here before man, even though they are never mentioned in the bible and the remains of them are found everywhere. At one time or another you likely believed Santa Clause, the Tooth Fairy, and the Easter Bunny were real. You likely believed those for years. But those didn't prove out, did they?

So, believe what you want, you have demonstrated that you are too stubborn to listen to actual evidence. Who cares? Good for you. Glad you are happy. BUT, nothing you have posted even comes anywhere NEAR proving your position. Thats a fact. Of course you won't believe this either, I know that, but there it is for you anyway.

Ignorance is bliss. There ya go, your new motto!!!!! :D

Too ignorant to listen hardly. I never said that the LLY will not overheat.

I stated the situations I've towed, along with what I tow and have not had any issues. Could it overheat sure but if it was due to a design flaw it would've happened by now. I owned a Ford V10 prior to this. I'm sure you've heard of the V10's blowing spark plugs out. Mine never did, but that's all you heard when the V10 was mentioned. You guys get a little bent when someone that has a similar year vehicle model and doesn't have the problems you guys have had.

I'm not here to cause problems, I just stated my experience along with some others. Everytime someone mentions that they have not had any problems they get jumped on by members that have had OH problems. Don't take it so personal.

I never took anything personal. I really just don't care. Seriously. If what you are doing is working for you, then great.

But that still does not mean that the same underlying problem isn't there does it? Do you have cancer? Do I? I hope neither of us do, but unless we go look and see we won't know FOR SURE will we? In nearly every case people find out they have cancer because something happens to cause doctors to look. Turns out they had it for a long time, just didn't know. I may have it now, and may never have a symptom and may pass away of old age never knowing I had cancer. Afterall, I have yet to hear of people going in just to see if they have cancer.

The overheating condition in the LLY is the same thing, its there, but it takes a specific set of circumstances to bring it out. Fact is most people don't meet up with those circumstances. Thats good if they don't. Its better that way. But for those who do, the truth comes out very clearly.

I am not talking about modified DMAX's either, I am talking about bone stock ones pulling legal loads at legal speeds on major highways. Aerodynamics is the #1 factor by the way, much much more so than weight. Being invisible makes that one hard to compare from one setup to the next. Thats the biggest problem, the differences in trailers, speeds, temps, wind direction and speed, etc etc etc make comparison between two trucks impossible.

But one thing is certain, once you instrument enough of them and apply a couple of the factors you see they all respond the same way. This has already been proven.

So if yours does what you need, thats fantastic. Thats all that matters. But that doesn't bar it from finding the same fate as all the rest should you change your trailer or go down the wrong road and meet up with the type of conditions that will cause it to overheat faster than the Titanic sank.

Everytime someone mentions that they have not had any problems they get jumped on by members that have had OH problems. Don't take it so personal

I will second that, well put

Everytime someone mentions that they have not had any problems they get jumped on by members that have had OH problems. Don't take it so personal

I will second that, well put

I agree, it is true that if someone posts that they have not had overheat problems they hear it from the many that have. Here is something that so often goes unnoticed in the "they do they don't" discussions: A whole bunch of the guys who now know that their LLY will overheat were once on the side that screams "Mine never overheats and I tow all the time heavy and work the crap out of it on 4,000 degree days!" I know this personally, I swore up and down that my truck would not overheat, but I was wrong.

Its not exactly that people are jumping on others, they are just trying to get you to understand what they already know. Can't convince someone though, so the argument ensues. "My wife would never cheat on me!" Ha ha ha yeah ok, we all say that don't we, but sure seems so many do, and I bet all the ones cheated on said they wouldn't. But I bet if I tell you your wife might cheat on you the disagreement will be on, and its just the simple fact that one side is calling the other wrong that makes it "personal" doesn't it?

Afterall, I have yet to hear of people going in just to see if they have cancer.


You'd be surprised, As I type this from the console of my CT scanner. People pay good cash to see if they have cancer and coronary calcifications.(whole body imaging)

Anyways, back to the topic. I not trying to stir the pot whatsover. I'm curious to know how many trucks you've tested under the circumstances you describe.
We have covered wind, grade, heat. Can you elaborate the exact conditions you put on the trucks to make them overheat.

You'd be surprised, As I type this from the console of my CT scanner. People pay good cash to see if they have cancer and coronary calcifications.(whole body imaging)

Anyways, back to the topic. I not trying to stir the pot whatsover. I'm curious to know how many trucks you've tested under the circumstances you describe.
We have covered wind, grade, heat. Can you elaborate the exact conditions you put on the trucks to make them overheat.

Ok, I personally don't know of anyone that has gone to check for this, and if they have they have not mentioned it. Since that is your job, of course you have seen them. I would venture to say they are the minority by far, and that it is not a common thing to do for the average person.

More than a dozen different trucks instrumented, and I have yet to see one vary enough in its reaction to come anywhere near close enough to allow it to escape the inevitable. I have never seen an LLY that did not respond the same way, not suprising really since they are all built with the same parts to the same specs. As a clue, check out the 06+ trucks, they are jam packed with cooling upgrades, I bet a lot more than you know about. Even with all the upgrades they are marginal at best.

Workload enough to force you to need 95% or greater engine load for 6 minutes continuously in temps of 95* or higher will overheat any LLY. We (as a group collectively on this site and all across the country) have measured coolant flow rates, measured the temp rise, and calculated the BTU capability of the radiator, and it comes up well short. Thing is, only a small percentage of people own trailers of the dimentions and weight and also have grades that force the issue.

Its not that "a small percentage of LLY's overheat" its that a large percentage are concrete cadillacs or wanna be drag racers and never keep a real load on for minutes at a time. Above them are guys who do tow heavy but do not own seriously high profile large side area trailers. They swear they work their trucks and they don't overheat. They also tow with cruise control generally too, cruise won't keep the truck floored. I can take a truck that overheats pulling a 13k high drag trailer and put a 20k low drag trailer behind it and it will pull the heavier trailer much easier and not overheat.

Do not take this personal, but just because you think you have a big trailer doesn't really mean it is, it just means its big to YOU. I think a 4,000 square foot house is a big house, but I bet guys living in 10,000 square foot or bigger houses would disagree. Exactly what trailer do you tow?

My trailer is a 26ft Fleetwood Gearbox, nearly 12k loaded. No, I don't believe my trailer is big at all, I am just under my GCVW. There's a guy on RV.net with a 47ft Warrior, that's big.

I don't hit the grades in OD or cruise control. Under the worst head wind on a long grade, my main concern is EGT's. If I was to wood my truck up a long grade my EGT's would be out of control. Would my truck overheat then? possibly. I don't need to put my foot to the wood to maintain 55.

Sodfarmers truck overheats with much smaller loads, that to me would be a problem. If my trailer were a 5ver within my towing limits, I honestly don't think it would make any difference.

My trailer is a 26ft Fleetwood Gearbox, nearly 12k loaded. No, I don't believe my trailer is big at all, I am just under my GCVW. There's a guy on RV.net with a 47ft Warrior, that's big.

I don't hit the grades in OD or cruise control. Under the worst head wind on a long grade, my main concern is EGT's. If I was to wood my truck up a long grade my EGT's would be out of control. Would my truck overheat then? possibly. I don't need to put my foot to the wood to maintain 55.

Sodfarmers truck overheats with much smaller loads, that to me would be a problem. If my trailer were a 5ver within my towing limits, I honestly don't think it would make any difference.

With a high drag heavy load you would find you might have to be at or near full throttle just to stay at freeway speed, and then up a grade floored you will NEVER maintain 55. Thats the difference between cruising with a light aerodynamic load like yours and actually working the truck against a heavy high drag load. On flat ground with no wind my truck had a top speed of 72 mph floored towing the overheat test load. I bet I could run your trailer at 97 mph against the limiter, its about as much load as my boat.

The Fleetwood Gearbox 26 foot models are neither high profile nor heavy. They are actually very down sloped towards the front, and present very little frontal area. I would consider this trailer to be an aerodynamic load.

The dry weight is only about 6,400 pounds which is very light in the diesel towing world and very light for an RV. Further, the gross weight rating of the trailer is only 11,500 pounds, which leaves at least 3500 pounds of weight off the GCWR of the truck if your trailer is loaded to its maximum, and odds are you are likely under the 11,500 mark. Have you weighed it?

Here are specs on this type of trailer:

http://www.toyhaulermagazine.com/images/gearbox1.jpg

This trailer is not in any way representative of a load that would be expected to produce the overheating condition in the LLY. To do it with this trailer you would need to truly dog the truck, since pulling this trailer is easy work for a Duramax. If this is the trailer that you are banking your trucks ability to not overheat on then I highly suggest you not take up anyones bets using other legal load trailers as a test as you will discover a whole new world.

Thanks for posting your setup, it greatly explains your steadfast assertion that your truck does not overheat. I am with you, with your trailer it is VERY unlikely to ever overheat.

well I have to agree with Tx here I have a 05 and as I havent overheated yet IM sure its there ,just waiting . when new we took a long trip to yellowstone pulling a older 26 bumper pull not to bad but loaded for bear ,but I do remember a couple a long grades across utah to colo. and the heatsoak problem showing some sighns (gage rising ,fan burning my ears ,shuting off a/c), on that 5k trip I got 14+ mpg so I was happy camper.then we bought a new 5th about 1k morein wieght but much higher ,stiil light for truck @ 7k . coming back from grand cyn. hit a head wind and my fuel went to 10mpg and the fan was singing all the way no grade .normall mpg with the 5Th is about 11.5 way down from the 14 I got with the bumper pull ,piont the areo of the 5TH is a potential problem for the cooling system .....now my wife wants a bigger 5th but I love my 05 truck only time and Ill be calling tx ... you cannt argue with the testimonies that many have, the problem is real like termites not noticed right away but one day bang.....my .o2

Once again Guys, either agree to disagree or don't post here.

You are more then welcome to discuss the technical aspects of the LLY overheating. Just don't show signs of overheating yourselves and DON'T make it anything close to personal. It's way too early is the "overheating" season to be this heated.

**STAFF EDIT to remove prohibited link**
This was an interesting read.

My trailer is a 26ft Fleetwood Gearbox, nearly 12k loaded. No, I don't believe my trailer is big at all, I am just under my GCVW. There's a guy on RV.net with a 47ft Warrior, that's big.

I don't hit the grades in OD or cruise control. Under the worst head wind on a long grade, my main concern is EGT's. If I was to wood my truck up a long grade my EGT's would be out of control. Would my truck overheat then? possibly. I don't need to put my foot to the wood to maintain 55.

Sodfarmers truck overheats with much smaller loads, that to me would be a problem. If my trailer were a 5ver within my towing limits, I honestly don't think it would make any difference.

My truck only got hot with the 7800 lb. load once and I could not duplicate it again. My point by posting that it had nearly overheated with that light of a load is to illustrate that given the right conditions on the wrong day an lly can overheat.

I just want people to know up front that overheating can happen. When I bought my truck I had no idea they had any overheating problems and I came here looking for a solution. It would be lousy to have overheating happen and have no idea what was going on. I honestly hope none of you have to experience an overheat.

I found a solution in the V2 and have had not problems since.

m y 04 LLY runs at 210 empty or towing 12000 pounds. the fan comes on once in a while but that is it.

I agree to disagree with those that have had the overheat issue. I have an 05 LLY and have never overheated it. Nothing special about mine. Those that hav OH always say "in the right conditions". That is true with anything. I feel that I work mine to similar conditions as Tx has described. A picture of my truck and trailer setup is in my garage. I pull a 5v with a enclosed tag behind that. I'm pulling around 22k lbs. I use to live in Idaho and traveled through Utah to Vegas quite often. I currently live in Portland and still travel to Boise and all around often. When I pull I monitor my EGT's and engine temps through my Edge and I also have my load % shown. Pulling up Cabbage (Cascade Mountains in the eastern Oregon high desert) which is about 5 or 6 miles long atleast 6% grade, I pull at 55-60 mph and showing over 95% load all the time, with my AC on in August and the hottest I've gotten is 232. The fans kicked on at 220 and yes it still climed to a peak of 232 but before I got to the top it had cooled back down to 225 with my foot still in the throttle. All I'm saying is that the original poster may never have an issue, because they won't ever put it in the "right conditions" to have a problem. So to say the HE WILL have a problem is not accurate. JMO

I was not an overheater untill I had to stop 4 times to cool down going up Monarch pass with my new trailer 3 years ago.
No more fan noise for me!
Thanks TxC

I agree to disagree with those that have had the overheat issue. I have an 05 LLY and have never overheated it. Nothing special about mine. Those that hav OH always say "in the right conditions". That is true with anything. I feel that I work mine to similar conditions as Tx has described. A picture of my truck and trailer setup is in my garage. I pull a 5v with a enclosed tag behind that. I'm pulling around 22k lbs. I use to live in Idaho and traveled through Utah to Vegas quite often. I currently live in Portland and still travel to Boise and all around often. When I pull I monitor my EGT's and engine temps through my Edge and I also have my load % shown. Pulling up Cabbage (Cascade Mountains in the eastern Oregon high desert) which is about 5 or 6 miles long atleast 6% grade, I pull at 55-60 mph and showing over 95% load all the time, with my AC on in August and the hottest I've gotten is 232. The fans kicked on at 220 and yes it still climed to a peak of 232 but before I got to the top it had cooled back down to 225 with my foot still in the throttle. All I'm saying is that the original poster may never have an issue, because they won't ever put it in the "right conditions" to have a problem. So to say the HE WILL have a problem is not accurate. JMO

Yours is what we would call a low profile 5er. FWIW, you could put both of your trailers in mine. cu.ft.

I was a non overheater along with many others for some time, until I loaded her up. Overheat alarms and 100% fan with > 240* ECT convinced me otherwise.

Rick and Tx both told me I would be there, I didnt believe.

The very short answer is that the Engine/Tranny package in the 04.5-05 LLY truck creates more heat than the radiator (which is completely buried by the IC) can shed into > 85* OAT.

My V2 results are in my sig.

Wish I could comment on this but I never have really pulled long grades in high heat like you're talking about. But I try to pull in the cool of the day and once the temps start climbing I drop out of OD and the the revs come up. I tipped the scales at 25,700 with a 95 Holiday Rambler 5th moving from Elko, NV to Pocatello and never had problem but then like I said it was cooler outside and I was happy to just plod along if the engine felt like she was straining. Older semi driving lessons, good luck or good weather. Between OH and not having a 6th OD would it not be cheaper to sell and buy an Non LLY like LBZ? My LLY is my first new truck and diesel so I'm having a hard time wanting to give her up. She's awesome in my book but then that was never really the question.

Wish I could comment on this but I never have really pulled long grades in high heat like you're talking about. But I try to pull in the cool of the day and once the temps start climbing I drop out of OD and the the revs come up. I tipped the scales at 25,700 with a 95 Holiday Rambler 5th moving from Elko, NV to Pocatello and never had problem but then like I said it was cooler outside and I was happy to just plod along if the engine felt like she was straining. Older semi driving lessons, good luck or good weather. Between OH and not having a 6th OD would it not be cheaper to sell and buy an Non LLY like LBZ? My LLY is my first new truck and diesel so I'm having a hard time wanting to give her up. She's awesome in my book but then that was never really the question.

You don't need to sell it. The V2 solves the oh problem. I'm sure it would be cheaper to invest in the v2 then it would buying a new truck.

You don't need to sell it. The V2 solves the oh problem. I'm sure it would be cheaper to invest in the v2 then it would buying a new truck.

That is exactly why I added it to my truck. And most of the folks complaining about the cost of an additional rad have spent more money in things that make no reliability issues.

I have more money in wheels than my V2.

It's all 'under the right conditions':

'under the right conditions', my high beams do not make the road visable enough......so I added more lights

'under the right conditions', my chargeing system can't handle the given load, so I added a second alternator

'under the right conditions', my radio fuzzes out, so I added Sirus radio.

'under the right conditions', my horn isn't loud enough, so I added train horns.

'under the right conditions', there is not enough storage, so I added a box in the bed.

'under the right conditions', I can't see well behind my trailer, so I added a rear view camera to the trailer.

'under the right conditions', I can't carry as many guns as I want, so I added 2 sets of gun racks.

'under the right conditions'............................

It's all 'under the right conditions'.:rolleyes:

I've conquered the Rocky Mountains handily a dozen times pulling my 14K lb 5th. Sure the fan comes on, it's just doing it's job. Besides who ever said a diesel wasn't noisey? My klinker never has overheated. If yours does try pulling your foot just a little bit out of the hole. You paid a lot of money for that engine, it will serve you well if you don't beat it to death.

P.S. When you get to pulling, you'll LOVE that Allison!

Klinker, I agree. I think the reason some of us have such a hard time "pulling our foot out of the hole" is because we own other "versions" of the Duramax, and have no problems with them getting hot ever.

That Allison is pretty sweet though huh?!

I've conquered the Rocky Mountains handily a dozen times pulling my 14K lb 5th. Sure the fan comes on, it's just doing it's job. Besides who ever said a diesel wasn't noisey? My klinker never has overheated. If yours does try pulling your foot just a little bit out of the hole. You paid a lot of money for that engine, it will serve you well if you don't beat it to death.

P.S. When you get to pulling, you'll LOVE that Allison!
You say, "you paid a lot of money for that engine, try pulling your foot out of the hole if it get's hot".
I'm saying, "I paid a lot of money for this engine and I SHOULDN'T HAVE TO pull my foot out in order for it to do what it was designed to do!" On other duramax versions (LB7, LBZ, LMM) you don't.

The other option is you could just put the V2 on and dig the hole as deep as you want. :D
I cut a hole in my floor board just so I could shove the go pedal further! :lol: :joke:

You say, "you paid a lot of money for that engine, try pulling your foot out of the hole if it get's hot".
I'm saying, "I paid a lot of money for this engine and I SHOULDN'T HAVE TO pull my foot out in order for it to do what it was designed to do!" On other duramax versions (LB7, LBZ, LMM) you don't.

The other option is you could just put the V2 on and dig the hole as deep as you want. :D
I cut a hole in my floor board just so I could shove the go pedal further! :lol: :joke:

:exactly:Explain it to the old lady why you have to turn off the ac and slowdown to pull the same load you did with a gasser (in my case).

I can now keep my pedal to the floor over any coloado pass without hearing the power sucking fan all of the way up and letting up on the pedal thanks to the V-2.

My buddy with the same size trailer and a Dodge can do it why can't LLY'S ????

Been there done it!

I also have a overheater 2005 duramax duelly. I have had it overheat pulling a 3000lb trailer when it was 75 degrees outside. I have it overheat unloaded and no trailer at 95 degree temp. The cooling fan starts to roar and the temp gauge keeps climbing untill the dic starts to flash coolant hot. Took to dealer on several occasions they changed the cooling fan assembly 2 times and then changed out the air cleaner assembly from a 2006 lmn but my truck will still overheat and sound like a SCHOOL BUS. I also have a problem with the steering issues. Namely the hard stiff steering at slow parking lot speeds and or when the truck is stopped and try to turn the steering wheel. It turns ok for about half of the whell travel then it gets so stiff and looses power assist. I have had a new power steering pump installed, new steering gear assembly and was also told on one occasion that one of my tires was a few lbs to low on air that was causing me troubles. Imagine that on a $51000 truck that starting haveing these issues at 1613 miles.. The truck now has 21000 miles on it and I am afraid to use it anymore because I dont want to jeopardize my familys lives driving something that could leave us stranded on the side of the road somewhere. Gm states it can not duplicate some of the problems but the mechanics pull me to the side and say there are a (lot of complaints) about the same problems i am having.

Has anyone had any luck with lemon law on these trucks

I also have a overheater 2005 duramax duelly. I have had it overheat pulling a 3000lb trailer when it was 75 degrees outside. I have it overheat unloaded and no trailer at 95 degree temp. The cooling fan starts to roar and the temp gauge keeps climbing untill the dic starts to flash coolant hot. Took to dealer on several occasions they changed the cooling fan assembly 2 times and then changed out the air cleaner assembly from a 2006 lmn but my truck will still overheat and sound like a SCHOOL BUS. I also have a problem with the steering issues. Namely the hard stiff steering at slow parking lot speeds and or when the truck is stopped and try to turn the steering wheel. It turns ok for about half of the whell travel then it gets so stiff and looses power assist. I have had a new power steering pump installed, new steering gear assembly and was also told on one occasion that one of my tires was a few lbs to low on air that was causing me troubles. Imagine that on a $51000 truck that starting haveing these issues at 1613 miles.. The truck now has 21000 miles on it and I am afraid to use it anymore because I dont want to jeopardize my familys lives driving something that could leave us stranded on the side of the road somewhere. Gm states it can not duplicate some of the problems but the mechanics pull me to the side and say there are a (lot of complaints) about the same problems i am having.

How long have you had this truck? I dont care what it is, if I bought something new and had the level of trouble you are having, the POS would be parked at the entrance to the dealer showroom. Your overheat is a failure issue, there is no other way to say it. It isnt what the heavy haulers are getting. Your steering locking up is a failure issue also. The steering problems that are common are a feel of rattle in the steering wheel. I have never heard of the problems you are having as a common issue in any vehicle.

By the way there have been a few that have had luck with the Lemon Law, however most people wouldnt put up with it for 2 years. Laws vary state by state.

How long have you had this truck? I dont care what it is, if I bought something new and had the level of trouble you are having, the POS would be parked at the entrance to the dealer showroom. Your overheat is a failure issue, there is no other way to say it. It isnt what the heavy haulers are getting. Your steering locking up is a failure issue also. The steering problems that are common are a feel of rattle in the steering wheel. I have never heard of the problems you are having as a common issue in any vehicle.

By the way there have been a few that have had luck with the Lemon Law, however most people wouldnt put up with it for 2 years. Laws vary state by state.
I bought the truck new august 2005

I Heard That The Air Box And A Flash Fixes The Problem Here Is The Tsb#06-06-04-036d That From Gm

Had the airbox and reflash a few months ago..it still overheats

"The Whole Enchilada" FOR $1800.00 !!!!!????? WTF?????? ARE YOU KIDDING ME? SOUNDS LIKE A COMPLETE AND TOTAL RIP-OFF.:eek: :rippedhan Sorry, that just seems like another way to get a lot of money for a little something. Had my truck for almost 2 years with no OH problems. It seems to be a rare thing with just a few trucks.

I sent paperwork in to the lemon law lawyers today.. Iam tired of this.truck and no respect from most dealers and especially from chevy customer service. I had this truck in for service 24 times for the steering and overheating issues. Mine sounds like an old school bus with the fan roaring all the time. . Has anyone heard of the 2008 duramax overheating or any other major issues?
Thanks for any help.

That is a pretty bold and inaccurate statement. I have pulled in all types of conditions towing over 11k. I have never experienced any overheating issues in the 3 years I have owned my truck. Here in CA we have long steep grades in the middle of the desert along with high winds, never had a problem.

second to that!!

I guess some overheat and some dont.. Im no expert on anything.. I know mine is completly stock.. I really dont know what to look for next time before I buy.. I have always been a gm person, always had reasonably good service from chevy in the past.

My LLY would overheat completely stock, pulling within it's rated capacities with everything where it was supposed to be. (coolant levels etc.) no funny business. Believe me, when you have your family in tow with little ones in the back seat, the last thing you want to do is overheat your truck. I did everything I could to keep my truck from overheating which included backing off the throttle (within reason, keep in mind the road I had the most problem with is a 65 MPH road and I didn't want to get rear-ended either is trying to do 35 in a 65 pushing it too hard?) during the summer when it was 100+ outside we were climbing the hills with our windows down, A/C off, and the heater on full blast! That's fun with the wife and kids.
You say when you pull a heavy trailer you have to drive different? That's only if you own a LLY. LB7's, LBZ's, dodges and fords of various motor generations could all do what my LLY couldn't without overheating.
Where do you live and what do you pull?

This is absolute bulls&%!. I have owned all 3 diesel trucks, all pulling the same load, and all having done so under th same conditions at any given time of the year (summer, spring, fall, winter). I don't know of ANY diesel that would not overheat when pulling a 40'+ trailer trying to go 65 frickin' miles per hour up a grade. C'mon man, 35-55 pulling up any grade is reasonable with that big of a load with any truck, but when you start trying to push any of them that hard (65mph), they will get hot, no questions asked. No this isn't hearsay, this is 150,000+ miles of me behind the wheel pulling 6 horses fully loaded or a 36' 5ver weighing in at 12,700 fully loaded. Sure, I can OH my LLY if I drove with no sense of pulling, just as I could my old 2001 7.3 or my 2001 Cummins. Yeah, you do have to drive different when pulling a heavy load.....it's pure physics. You aren't going to get rear ended driving a slower rate of speed. Haven't you seen the semis that have to drive in the slow lane due to heavy loads? That's just towing man......

wow talk aobut beating a dead horse. So some of us have never overheated our lly's. there are thousands of llys on the road that will never overheat. I can make any vehicle on the road right now overheat if I wanted to, as you guys say "under the right conditions", well that could be anything, low on coolant, plugged radiator, bad thermostat, etc. etc..When you pull a heavy trailer you have to drive different than driving empty. you have to feel what the truck does not really want to do. If you are pulling a long grade in high temps back off a little. Some of you guys just kill me with all of this overheating crap, man you people that have chronic overheaters are a very very small percentage of lly owners. It also seems to me that alot of you have programmers, which is ok, but how do you suppose you make all that extra power?? It feeds the engine more fuel than it was designed for, which will make more heat. This forum is supposed to help people exchange imformation, but every time the overheating thread comes up it is the same people pissing and moaning, man get over it

For real man......

Everytime someone mentions that they have not had any problems they get jumped on by members that have had OH problems. Don't take it so personal

I will second that, well put

I will third that?

"The Whole Enchilada" FOR $1800.00 !!!!!????? WTF?????? ARE YOU KIDDING ME? SOUNDS LIKE A COMPLETE AND TOTAL RIP-OFF.:eek: :rippedhan Sorry, that just seems like another way to get a lot of money for a little something. Had my truck for almost 2 years with no OH problems. It seems to be a rare thing with just a few trucks.

To kill the overheating, you only need the V2, which will cost $930. Some wish to 100% eliminate the factory fan and run all electrics, that's whay will cost $1800 total. That's for the V2 + fan + Fan Damn. Most people just run the V2 with it's own electric fan for around $1200 to eliminate any hint of overheating. That's much easier than relearning how to drive.

If you don't have a problem, then good for you. Some of us (I guess those of us that don't know how to drive:rolleyes:) do have a problem and want it corrected without buying a whole new vehicle.

There are plenty of us that have run the exact same load with other vehicles and the only ones that seem to overheat or get close are always the LLY's. Must be the driver, I guess.:rolleyes:

If my truck was out of warranty and I was going to keep it I would try some of the mods out there.. But for now I am going to try for a buyback or replacement..
thanks,
Dave

I agree to disagree with those that have had the overheat issue. I have an 05 LLY and have never overheated it. Nothing special about mine. Those that hav OH always say "in the right conditions". That is true with anything. I feel that I work mine to similar conditions as Tx has described. A picture of my truck and trailer setup is in my garage. I pull a 5v with a enclosed tag behind that. I'm pulling around 22k lbs. I use to live in Idaho and traveled through Utah to Vegas quite often. I currently live in Portland and still travel to Boise and all around often. When I pull I monitor my EGT's and engine temps through my Edge and I also have my load % shown. Pulling up Cabbage (Cascade Mountains in the eastern Oregon high desert) which is about 5 or 6 miles long atleast 6% grade, I pull at 55-60 mph and showing over 95% load all the time, with my AC on in August and the hottest I've gotten is 232. The fans kicked on at 220 and yes it still climed to a peak of 232 but before I got to the top it had cooled back down to 225 with my foot still in the throttle. All I'm saying is that the original poster may never have an issue, because they won't ever put it in the "right conditions" to have a problem. So to say the HE WILL have a problem is not accurate. JMO

Mine overheats and Im 100% stock. never pulled more than 7000 lbs.. Mine has heated with a lawnmower trialer in tow..

This is absolute bulls&%!. I have owned all 3 diesel trucks, all pulling the same load, and all having done so under th same conditions at any given time of the year (summer, spring, fall, winter). I don't know of ANY diesel that would not overheat when pulling a 40'+ trailer trying to go 65 frickin' miles per hour up a grade. C'mon man, 35-55 pulling up any grade is reasonable with that big of a load with any truck, but when you start trying to push any of them that hard (65mph), they will get hot, no questions asked. No this isn't hearsay, this is 150,000+ miles of me behind the wheel pulling 6 horses fully loaded or a 36' 5ver weighing in at 12,700 fully loaded. Sure, I can OH my LLY if I drove with no sense of pulling, just as I could my old 2001 7.3 or my 2001 Cummins. Yeah, you do have to drive different when pulling a heavy load.....it's pure physics. You aren't going to get rear ended driving a slower rate of speed. Haven't you seen the semis that have to drive in the slow lane due to heavy loads? That's just towing man......


At least you realize the lly is flawed. As far as the other brands overheating, my neighbor with his 04 PSD pulls several thousand more pounds with a higher profile 5er (Jayco Designer series)up the same hills that I used to overheat on. So I call BULLSHIT on your statement regarding other brands and overheating.

If you chose to *****foot your 50k truck up the grades at 35-55 then why not get a gasser? My Expedition would pull my trailer up serious grades in a 110 degree heat full throttle for 5-10 miles at 50mph but NEVER came close to overheating. The reason I sold it was because of the horrible gas mileage towing and it worked a little too hard for the load it was pulling even though it was in it's towing range according to ford. Sorry but I will continue to pull 10k up the grades at "safe highway speeds" now that I have the V2.

Believe me I wish I could have spent that money that I spent on the V2 for better mods on the truck. Nothing has pissed me off more then this whole overheating bullshit with my truck. To date I have not seen any evidence at all that leads me to believe that this is a very small percentage problem with these trucks. The more I investigated I found that the fan running 80-90% of the time is not normal while towing. I then started monitoring my temps with a guage only to find out just how hot I was getting on my trips.

I bought a diesel to Tow big,get better mileage towing, and NOT SLOW DOWN ON THE GRADES. I can now achieve this with the v2 without overheating. You may call "the whole enchilada" a rip off but for those of us that have the V2 will say money well spent.

My truck never "over heated" this past summer while towing my 8000 lb trailer, but...going up a couple of long steep hills, doing around 50mph during the heat of the day, and in rather windy conditions, I saw my temp gauge move up rapidly, and it made me nervous. The fan engaged and did it's job, but still....made me watch my temp gauge more than I wanted to. So I just ordered the V2 and fan option and I look at it this way, most of us enjoy spending money on our trucks, whether to improve the looks or improve the performance. My choice at this point in time was to improve it's cooling performance and also, it's like an insurance policy, you may never need it...but when you do, it's there. :)

Ron

My truck never "over heated" this past summer while towing my 8000 lb trailer, but...going up a couple of long steep hills, doing around 50mph during the heat of the day, and in rather windy conditions, I saw my temp gauge move up rapidly, and it made me nervous. The fan engaged and did it's job, but still....made me watch my temp gauge more than I wanted to. So I just ordered the V2 and fan option and I look at it this way, most of us enjoy spending money on our trucks, whether to improve the looks or improve the performance. My choice at this point in time was to improve it's cooling performance and also, it's like an insurance policy, you may never need it...but when you do, it's there. :)

Ron


You will see a bump in mileage and have a quieter cabin while traveling since the fan will run about half as much. It took me a long time to bite the bullet but my truck is as it should have been from the factory now.

This is absolute bulls&%!. I have owned all 3 diesel trucks, all pulling the same load, and all having done so under th same conditions at any given time of the year (summer, spring, fall, winter). I don't know of ANY diesel that would not overheat when pulling a 40'+ trailer trying to go 65 frickin' miles per hour up a grade. C'mon man, 35-55 pulling up any grade is reasonable with that big of a load with any truck, but when you start trying to push any of them that hard (65mph), they will get hot, no questions asked. No this isn't hearsay, this is 150,000+ miles of me behind the wheel pulling 6 horses fully loaded or a 36' 5ver weighing in at 12,700 fully loaded. Sure, I can OH my LLY if I drove with no sense of pulling, just as I could my old 2001 7.3 or my 2001 Cummins. Yeah, you do have to drive different when pulling a heavy load.....it's pure physics. You aren't going to get rear ended driving a slower rate of speed. Haven't you seen the semis that have to drive in the slow lane due to heavy loads? That's just towing man......

I can tell this isn't your first rodeo cowboy, but you have not put in the research to even know what will overheat a LLY. After 4 years and much testing and some school of hard knocks learning this is what will overheat a LLy. High wind drag (ie approaching 14 ft), long grade the will put the motor at 95% or greater load for 6 minutes or longer, and high outside temp( above 85). Weight is less of a factor.

Your load is a gooseneck stock trailer that may approach 10 ft at the highest. The nose of your trailer is angled rather than a big flat wind drag and your gcvw probably doen't exceed 20,000 lbs. What you have just told us is that your truck will not overheat pulling a semi-heavy, rather aerodynamic load. That is great it works for you, but if you pulled a big 5th wheel camp trailer, up the long grades, in high heat, your truck would be brought to it's knees IMHO.

If you are still unconvinced, TxChristopher, whose products you called a rip off, has a standing $5000 bet if you can pull his legal load up the grade of his choice. You already have a gooseneck hitch, it would be easy money.

Good luck, I am happy your truck works for you.

My choice at this point in time was to improve it's cooling performance and also, it's like an insurance policy, you may never need it...but when you do, it's there. :)

Ron

This is exactly how I saw it last year when I bought the V2 w/fan. And I've been cool as a cucumber ever since.

"The Whole Enchilada" FOR $1800.00 !!!!!????? WTF?????? ARE YOU KIDDING ME? SOUNDS LIKE A COMPLETE AND TOTAL RIP-OFF.:eek: :rippedhan Sorry, that just seems like another way to get a lot of money for a little something. Had my truck for almost 2 years with no OH problems. It seems to be a rare thing with just a few trucks.

In addition to what Rttoys already stated, the Fan Damn package also frees up HP, and improves mileage. I gained 1-2 MPG after installing "The Whole Enchilada". $1800 bucks a rip off, I think not. You could easily spend that and more on tires and rims which won't do a thing to help the performance of your truck.

wow I have not read this thread in a while, and look the same know it all duramax engineers are still pissing and moaning everytime someone states that they have a truck that has not overheated..lol and for your info, 900 bucks for a radiator, brackets, and a cheesy metal gaurd sounds like txchristopher is making a killing on all you on the overheating bandwagon.

900 bucks for the v-2= 900 bucks
reading all this pissing and moaning by grown men whenever someone states that they have a truck that has not overheated= priceless

Leave the insinuations that a supporting vendor here is ripping people off out of this thread. This is not the place.

I know TX personally and I know some of the R&D that went into this project.;)

just calling it like I see it. never said he is ripping people off, I just said he is making some good money off of some of the sky is falling group of people

I support many venders on here, and they have been great to work with. They do not get on here and try to bash CUSTOMERS, cannot say the same for the creator of the v-2, just my 2 cents worth

At least you realize the lly is flawed. As far as the other brands overheating, my neighbor with his 04 PSD pulls several thousand more pounds with a higher profile 5er (Jayco Designer series)up the same hills that I used to overheat on. So I call BULLSHIT on your statement regarding other brands and overheating.

If you chose to *****foot your 50k truck up the grades at 35-55 then why not get a gasser? My Expedition would pull my trailer up serious grades in a 110 degree heat full throttle for 5-10 miles at 50mph but NEVER came close to overheating. The reason I sold it was because of the horrible gas mileage towing and it worked a little too hard for the load it was pulling even though it was in it's towing range according to ford. Sorry but I will continue to pull 10k up the grades at "safe highway speeds" now that I have the V2.

Believe me I wish I could have spent that money that I spent on the V2 for better mods on the truck. Nothing has pissed me off more then this whole overheating bullshit with my truck. To date I have not seen any evidence at all that leads me to believe that this is a very small percentage problem with these trucks. The more I investigated I found that the fan running 80-90% of the time is not normal while towing. I then started monitoring my temps with a guage only to find out just how hot I was getting on my trips.

I bought a diesel to Tow big,get better mileage towing, and NOT SLOW DOWN ON THE GRADES. I can now achieve this with the v2 without overheating. You may call "the whole enchilada" a rip off but for those of us that have the V2 will say money well spent.

I don't choose to *****foot up grades and normal highway speeds under conditions of pulling 12k+ are not always going to be 65mph. Ask any truck driver pulling a grade under load who are running VERY reputable engines (CAT, Detroit, Volvo, Cummins, etc...). And yeah, we all have a "friend" who will back up our claims for 1000 years, but my personal experience, having owned and driven all big 3 diesel trucks, is exactly as I have stated before.
Bottom line, my LLY has never overheated pulling grades (Grapevine, Raton Pass, Donner Pass, etc....) and I pulled up these going 55-60 with throttle left over. Just because it is a diesel doesn't mean I should be able to put my foot through the floor while loaded with no consequence. Sorry to hear you had to spend the $1000. I hope I don't have to. Maybe mine will OH the next road trip I take....I'll be the first to get on here and bitch if it does, but I won't get all pissed at those who don't have the same problem or call "bullshit" when people claim their truck is fine.......

I say no more....this whole thing wears me out. Where's the beer?:beerchug:

No, No, Noo....

Do NOT put Beer in the radiator,

- it boils off at low temperatures,
- it corrodes its innards,
- also, if any of it gets inside the driver, it causes the truck to drive crooked.

:D :D

I support many venders on here, and they have been great to work with. They do not get on here and try to bash CUSTOMERS, cannot say the same for the creator of the v-2, just my 2 cents worth

Hey, if what your doing works for you. GOOD!

I don’t think most vendors have invested their own time, energy, or resources to identify, develop, test, re-test, improve, and provide the customer service for the “Fix” as Christopher has. Heck, we can’t even get GM to do that.

I have followed this OH issue since I bought my truck in 2005. I don’t even have a V2, but I know the “right conditions” to avoid or where to get a “fix” if I know I am going to meet the “right conditions.”

No one gets bashed, just "Right Conditions" are being clarified. Sure it gets a little heated every once in awhile. A lot of people weigh in on this subject and claim they have a non-OH LLY. They describe their load/trailer, routes, OAT and etc... But, in the end, they do not meet all the "Right Conditions."

So with that in mind…

IF you are not overheating with what you tow- GREAT!!!
IF you are not overheating with the way you drive- GREAT!!!
IF you have never overheated because your LLY doesn't OH- GREAT!!!

IF you do overheat, then the reason and "Right Conditions" have been identified on this site and you can make your choice: Buy a fix, Drive differently, change your trailer, buy a new truck or go after GM. It is just that simple.

Christopher has never said you have to buy the V2, more often than not, he has just clarified the conditions in his discussions.

Sheeesh.... end of rant:mad:

I say no more....this whole thing wears me out. Where's the beer?:beerchug:


I agree completely with ya. :)

I don't choose to *****foot up grades and normal highway speeds under conditions of pulling 12k+ are not always going to be 65mph. Ask any truck driver pulling a grade under load who are running VERY reputable engines (CAT, Detroit, Volvo, Cummins, etc...). And yeah, we all have a "friend" who will back up our claims for 1000 years, but my personal experience, having owned and driven all big 3 diesel trucks, is exactly as I have stated before.
Bottom line, my LLY has never overheated pulling grades (Grapevine, Raton Pass, Donner Pass, etc....) and I pulled up these going 55-60 with throttle left over. Just because it is a diesel doesn't mean I should be able to put my foot through the floor while loaded with no consequence. Sorry to hear you had to spend the $1000. I hope I don't have to. Maybe mine will OH the next road trip I take....I'll be the first to get on here and bitch if it does, but I won't get all pissed at those who don't have the same problem or call "bullshit" when people claim their truck is fine.......

I didnt mean to start a hate battle on here I was just wanting to state my problems with my truck. I dont leadfoot mine and it overheats period....Listen up people my 2005 duramax/allison overheats.. I have no reason mistate the facts. I have not installed any mods either for power or for correcting the overheating.. its all stock. I would bet if someoone was to bring their lly truck to my area on a hot day and run it up the hill near where I live it would start to run hot.. So now its time for the beer... or many of them..lol

wow I have not read this thread in a while, and look the same know it all duramax engineers are still pissing and moaning everytime someone states that they have a truck that has not overheated..lol and for your info, 900 bucks for a radiator, brackets, and a cheesy metal gaurd sounds like txchristopher is making a killing on all you on the overheating bandwagon.

900 bucks for the v-2= 900 bucks
reading all this pissing and moaning by grown men whenever someone states that they have a truck that has not overheated= priceless

Thank you for insulting me and every other helpfull member on this board. I work on these vehicles for a living. I'm an ASE Mater tech and once was a GM Certified Master Tech with 14 years of experiance under my belt. I've seen many things that the high dollar enginers in Detroit have messed up on. What looks good on paper may not be so in real life conditions, but GM gambled on this one and won the bet.

As stated before, if you do not have a problem with your truck under your towing conditions then good for you, but to come on here and insult others that have a problem and degrade them for purchasing a product that has been proven to cure their problem is just assinine.

The time and money TxC spent on development of the V2 will probably never be recovered by the sales of his product. I've even got money tied up in testing some of his products that I'll never recoup, but it doesn't matter to me, it's all in the effort to make our trucks better. If you have ever seen, in person, a V2 kit, you would have noticed how strong the subframe is and how solid the radiator is. Everything fits like a glove exactly where it should be, as if it belonged on the vehicle. I can't say that for many other aftermarket products I've installed on my truck. The 'cheesy' screen on the front is only there to catch debris comming from off the road, it's not there to take a full frontal collision.

I sure hope you never come to this side of the fence.

Thank you for insulting me and every other helpfull member on this board. I work on these vehicles for a living. I'm an ASE Mater tech and once was a GM Certified Master Tech with 14 years of experiance under my belt. I've seen many things that the high dollar enginers in Detroit have messed up on. What looks good on paper may not be so in real life conditions, but GM gambled on this one and won the bet.

As stated before, if you do not have a problem with your truck under your towing conditions then good for you, but to come on here and insult others that have a problem and degrade them for purchasing a product that has been proven to cure their problem is just assinine.

The time and money TxC spent on development of the V2 will probably never be recovered by the sales of his product. I've even got money tied up in testing some of his products that I'll never recoup, but it doesn't matter to me, it's all in the effort to make our trucks better. If you have ever seen, in person, a V2 kit, you would have noticed how strong the subframe is and how solid the radiator is. Everything fits like a glove exactly where it should be, as if it belonged on the vehicle. I can't say that for many other aftermarket products I've installed on my truck. The 'cheesy' screen on the front is only there to catch debris comming from off the road, it's not there to take a full frontal collision.

I sure hope you never come to this side of the fence.


Amen brother!!!

I support many venders on here, and they have been great to work with. They do not get on here and try to bash CUSTOMERS, cannot say the same for the creator of the v-2, just my 2 cents worth

:rant: warning...

There's a substantial difference between supporting vendors et al as you state, and being on the solution side of this issue. After you have fought GM over the overheating issue and won, after you have personally sunk countless thousands of hours and dollars into engineering a solution and proving in a court of law that GM screwed up on these trucks, I think you ought to have a little slack thrown your way when you get your tail in a knot over someone that is simply ignorant of the facts of the subject. Who among us get tired of hearing misleading information from people not well versed in the topic, especially when you are a subject matter expert?

Notice that I'm not denigrating anyone here; ignorance is not stupidity, it is simply a lack of knowledge. I too was ignorant on this subject until I read for about a week or so the majority of the information out here regarding the overheating issues of the LLY, the court case that TxC put together, and then the search and solution of the overheating problem. I now have a much better understanding of the problem, the solution, and the man. I don't drink, but I'd sure offer to buy TxC a beer if he ever comes to KY.

Maybe before you start casting stones in your glass house regarding a topic you are not prepared to discuss authoritatively, and regarding people whom you know nothing about... just maybe you should spend a week and read the countless thousands of posts in the myriad of overheating threads both here and on TxC's site and get a clue. If you do that, I suspect you'll feel differently and post differently. You may even find yourself compelled to offer TxC an apology for labeling him as a customer-bashing, panic-driving, opportunistic profiteer.

Sorry fellas for the long post, but this one stuck in my craw... :mad:

Oh... you can keep you $0.02...

:rant: warning...

There's a substantial difference between supporting vendors et al as you state, and being on the solution side of this issue. After you have fought GM over the overheating issue and won, after you have personally sunk countless thousands of hours and dollars into engineering a solution and proving in a court of law that GM screwed up on these trucks, I think you ought to have a little slack thrown your way when you get your tail in a knot over someone that is simply ignorant of the facts of the subject. Who among us get tired of hearing misleading information from people not well versed in the topic, especially when you are a subject matter expert?

Notice that I'm not denigrating anyone here; ignorance is not stupidity, it is simply a lack of knowledge. I too was ignorant on this subject until I read for about a week or so the majority of the information out here regarding the overheating issues of the LLY, the court case that TxC put together, and then the search and solution of the overheating problem. I now have a much better understanding of the problem, the solution, and the man. I don't drink, but I'd sure offer to buy TxC a beer if he ever comes to KY.

Maybe before you start casting stones in your glass house regarding a topic you are not prepared to discuss authoritatively, and regarding people whom you know nothing about... just maybe you should spend a week and read the countless thousands of posts in the myriad of overheating threads both here and on TxC's site and get a clue. If you do that, I suspect you'll feel differently and post differently. You may even find yourself compelled to offer TxC an apology for labeling him as a customer-bashing, panic-driving, opportunistic profiteer.

Sorry fellas for the long post, but this one stuck in my craw... :mad:

Oh... you can keep you $0.02...


I think you need to change your screen name to Randy_the_Genius!!! :lol:

I like the power gain, the mileage gain, the missing fan noise, the better throttle response, and the extended transmission and engine life due to lower oil and tranny temps. My bone stock tune truck with my goodies will stomp most tow tuned trucks pulling equal loads and it gets better mileage while doing it, all in smooth quiet comfort. Who cares about overheating? Its the smallest benefit in the grand scheme of things. ;)

I think there are only 10 "overheaters" out there and we know who they are.

Most people just deal with any given situation especially if they are rare or non-existent. I would say that 99.9% of the people that are here or even viewed this or any/all of the previous threads dealing with this topic already understand.

Trying to be polite, I will just say that everything in these threads is a bunch of crap instigated by a few individuals.

Don't trust them to fly your airplane, they would tie it down with a brick at the tail so the "high winds" won't blow them around. They would also forget to remove the brick and cause an aviation accident.

In the mean time, the regular tie-downs on the wings and tail would not be used since that means I cannot use the aircraft as originally intended.

We'll see if this gets censored....

As a parent, I often have to remind my children and myself that much of what is read on the internet is not worthy of value. These overheat threads have been the worst and yet most interesting readings.

Real life dictates that you visit with the other guy at the diesel pump or the campground (or wherever you travel) and find out if he/she has any problems.

Even if they had, I would trust that individual much more than someone that I can't even read their face to see if they are lying...

I'll bet this gets censored to...

None of this get censored, unless it's a personal attack. This isn't a conspericy:rolleyes:

As far as 10 overheaters.....well, I'd say 10 'worst case' ones that overheat with 7000# behind them, as we know of. The other overheaters are probably 10% of the total. Those that are unhappy with how hot they get, or could possibly OH given the right circumstances are about another 20-30%. The others, just don't tow enough to exibit a problem.

Damn I have a hard time dealing with ingnorant people.

I think there are only 10 "overheaters" out there and we know who they are.


Why would anything get censored?

Luckily for the rest of us the world operates not on what "you think" but on facts. Only 10 huh? Thats amazing. Here is a poll I did 2 1/2 years ago, of the respondents who met the criteria 43% overheated. There were 79 of them there "known overheaters" back when these trucks were new and not many were on the road.......

http://img136.imageshack.us/img136/9880/only10overheaterszs2.jpg

BUT

I am willing to wager that if you look, you will find some of your claimed "only 10" among those that voted "does not get hot". Guess what? Just like so many on here they swore that their truck would not overheat, but later found out the truth. Live your life in a fog, thats great, but please don't try to smokescreen others when the fact is you have no idea what you are talking about. ;)

Leave the personal insults out of here.;)

I guess GM did all that work on reflashing the ecm's, installing Ron Davis radiators, working with one of our current vendors on a ram air hood as a possible cure, and of course the infamous LBZ air cleaner swap for all 10 of us.):h

Then just because they thought there might be one more of us out there somewhere.....They totally redesigned the LBZ cooling system.:eek:

Come on Guys, the problem is real and documented by GM themselves. If your's doesn't overheat........Can I borrow it?):h

Why would anything get censored?

Luckily for the rest of us the world operates not on what "you think" but on facts. Only 10 huh? Thats amazing. Here is a poll I did 2 1/2 years ago, of the respondents who met the criteria 43% overheated. There were 79 of them there "known overheaters" back when these trucks were new and not many were on the road.......

http://img136.imageshack.us/img136/9880/only10overheaterszs2.jpg

BUT

I am willing to wager that if you look, you will find some of your claimed "only 10" among those that voted "does not get hot". Guess what? Just like so many on here they swore that their truck would not overheat, but later found out the truth. Live your life in a fog, thats great, but please don't try to smokescreen others when the fact is you have no idea what you are talking about. ;)


What's funny is at the time of the pole.....I didn't get hot, nor did Swatkins:eek: look and see for yourself. Put a real load back there guys, things change.

Hey TX...I keep waiting for a Kodiak fix. I started to get it hot again today...with snow on the ground. But I am towing heavy at high altitudes as usual. I think it is more of an altitude thing and running higher boost for long periods of time rather than outside temps. Running 70 MPH towing 20,000LBS over 7000' seems to be my magic numbers.

Leave the personal insults out of here.;)

I guess GM did all that work on reflashing the ecm's, installing Ron Davis radiators, working with one of our current vendors on a ram air hood as a possible cure, and of course the infamous LBZ air cleaner swap for all 10 of us.):h

Then just because they thought there might be one more of us out there somewhere.....They totally redesigned the LBZ cooling system.:eek:

Come on Guys, the problem is real and documented by GM themselves. If your's doesn't overheat........Can I borrow it?):h


Don't forget the buybacks Rick.

... much of what is read on the internet is not worthy of value.

True enough... I am taking your advice.

:blahblah:

Rick - Sorry if I made a personal insult. I tried not to.

So looks like there might have been 79 at that time. Time for another poll? I know there are a lot of people that have bought the mod and I am sure they are happy whether they needed it or not.

I just get tired of people scaring people into buying things not necessary. Global warming caused by humans? Get Al Gore here on a jet right now!

I am not a (medical) doctor but most of my friends refer to me as DOC. Will any of the rest of you "overheat" experts qualify yourselves?

BTW I am an engineer and have an Aerospace Engineering degree from the University of Minnesota - that's where I learned about heat transfer...

Rick - Sorry if I made a personal insult. I tried not to.

So looks like there might have been 79 at that time. Time for another poll? I know there are a lot of people that have bought the mod and I am sure they are happy whether they needed it or not.

I just get tired of people scaring people into buying things not necessary. Global warming caused by humans? Get Al Gore here on a jet right now!

I am not a (medical) doctor but most of my friends refer to me as DOC. Will any of the rest of you "overheat" experts qualify yourselves?

BTW I am an engineer and have an Aerospace Engineering degree from the University of Minnesota - that's where I learned about heat transfer...

How is anything being discussed considered to be "not necessary"???? In your sig you have a topper on your truck, this generally means you do not tow 5th wheels or gooseneck trailers, so we know you are not anywhere near maxing out your truck. So how do you know what happens to others who do max out their trucks? Magic seeing eye? Crystal ball? Telepathy? Some other unannounced trick to spy on the world? Please do tell how you are proving that so many people are just telling lies.

Fantastic that you are an engineer, so you can grasp that when our trucks are unable to transfer the heat the engine creates to the air via the on board heat exchanger (radiator) that the coolant temperature will continue to rise unabated. Not so tough right? By the way, engineers design things that don't work all the time, the deficiency of the LLY cooling system is just another added to the truly long list. ;) Pretty smart engineer guys designed exploding Space Shuttles and F-15 Eagles with nose sections that fall off, guess they intended for those things to happen . .. . ... ....

Rick - Sorry if I made a personal insult. I tried not to.

So looks like there might have been 79 at that time. Time for another poll? I know there are a lot of people that have bought the mod and I am sure they are happy whether they needed it or not.

I just get tired of people scaring people into buying things not necessary. Global warming caused by humans? Get Al Gore here on a jet right now!

I am not a (medical) doctor but most of my friends refer to me as DOC. Will any of the rest of you "overheat" experts qualify yourselves?

BTW I am an engineer and have an Aerospace Engineering degree from the University of Minnesota - that's where I learned about heat transfer...


I know you feel it is an internet hoax but honestly, it's been said a thousand times here "If your truck does not overheat doing what you do with it then great you just saved 1260.00 bucks"
I honestly wish I never heard of the V2 and my truck never EVER overheated. I will qualify myself for you. I'm a Business Systems Analyst by trade but A gearhead at heart for the last 20 years with over 40 cars and trucks owned that I have tinkered with.

dont take no rocket scientist to realize its all about gettin' enuff air flowing though a bunch littlebitty cracks in a radiator to keep er' cool......:smashfrea

Let's ALL ease up a little.;) We can agree to disagree, and we can all discuss this rationally.

Is there an LLY out there that won't overheat when loaded within specs and worked as all other variations of the Dmax were?

I can't say, but the odds were bad for me.

$1260 or whatever the price was a couple years ago is "a drop in the bucket" compared to my RVing experiences with an OH truck trying to pull the hills here on the west coast! Let me hook my trailer to your rig here in the Oregon mountains and we'll see how she does. I so rarely post anymore because my OH (engine and tranny) problems are over!

I don't think anybody on here is trying to scare anybody into buy something that is not nescessary. They are only telling them what they know to be true from their personal experiences.

I didn't want to believe all the stuff posted either. Unfortunately I found out that I happen to have 1 of the "10" overheaters that you claim are out there.

I didn't know it until I hooked up to a 7K enclosed trailer and hit a 5 mile 6 degree grade at the beginning summer. I got all the DIC warnings. I can't imagine what would have happened with a real load and 100 degree temps outside. If thats not an overheater I don't know what you would consider to be an overheater.

Believe what you want. I have tried some of the less expensive mods with little to no success. I am ordering the V2 w/Fan and be done with the problem.

. . . for keeping my mouth shut.

(1) I don't overheat vehicles, so I hopefully will never know if I have a true overheater, if your criteria is puking coolant. It tends to cause serious engine damage by then, so no thanks.

(2) I bought a 3500 SRW capable of towing 3x more than I ever would. The temp gauge shouldn't even budge with my 5,000 lb. toyhauler. So it was less than a year old, towing light, not anywhere near the worst of conditions, and it goes to almost 230*F on the gauge (almost 240*F actual)???? Sorry, that's unacceptable to me.

(3) I searched in the LB7 section. One guy wanted to know if 205-215*F was "overheating"; another said his started getting hot then never responded to questions by others; another had the gauge pegging sometimes and finally found out it was the gauge. You CAN'T start an overheating argument in the LB7 section; nobody will play.

Oh yeah, my "qualifications" are (1) I'm old and learned not to overheat engines about 38 years ago, and (2) I recognize that when the temp gauge goes right of center it's time to take evasive action because the cooling system is loosing ground.

Ok TX, me and the boys put some more lipstick on this pig you call the v2. What's our cut for the night? Oooohh shit.. I though I was sending you a pm:eek::eek::eek::eek::eek:.

Sorry, I couldn't help myself):h):h):h):h):h):h):h


It's just a joke. We all need to call it a night on this one fellas.:)

well I agree to disagree, but everytime someone says they have not overheated a LLy they get the panic patroll sicked on them, like it or not that is a fact. I think it is Miller Time.

Heeeelllll Yeeeaahhhhhh!!!! Beer, Beer, And More Beer!!:beerchug::beerchug::beerchug:

So TX, will you take 100.00?:D more mileage sounds good to me. I'll even send you a 12-pack.....c'mon man.

One point to remember;

Peasants built the Ark, Engineers built the Titanic.

This coming from an Electrical Engineer with 20 years of control systems knowledge.

I think there are only 10 "overheaters" out there and we know who they are.

Most people just deal with any given situation especially if they are rare or non-existent. I would say that 99.9% of the people that are here or even viewed this or any/all of the previous threads dealing with this topic already understand.

Trying to be polite, I will just say that everything in these threads is a bunch of crap instigated by a few individuals.

Don't trust them to fly your airplane, they would tie it down with a brick at the tail so the "high winds" won't blow them around. They would also forget to remove the brick and cause an aviation accident.

In the mean time, the regular tie-downs on the wings and tail would not be used since that means I cannot use the aircraft as originally intended.

We'll see if this gets censored....

The thing I like about this post is you are telling everyone that you have done little to no research about the problem or even attempted to understand it, yet you know it all to be bullshit.

Go on... we're all listening...:rolleyes:

As a parent, I often have to remind my children and myself that much of what is read on the internet is not worthy of value. These overheat threads have been the worst and yet most interesting readings.

Real life dictates that you visit with the other guy at the diesel pump or the campground (or wherever you travel) and find out if he/she has any problems.

Even if they had, I would trust that individual much more than someone that I can't even read their face to see if they are lying...

I'll bet this gets censored to...

Kinda a self fulfilling prophecy.

Rick - Sorry if I made a personal insult. I tried not to.

So looks like there might have been 79 at that time. Time for another poll? I know there are a lot of people that have bought the mod and I am sure they are happy whether they needed it or not.

I just get tired of people scaring people into buying things not necessary. Global warming caused by humans? Get Al Gore here on a jet right now!

I am not a (medical) doctor but most of my friends refer to me as DOC. Will any of the rest of you "overheat" experts qualify yourselves?

BTW I am an engineer and have an Aerospace Engineering degree from the University of Minnesota - that's where I learned about heat transfer...

I have yet to see anyone try and scare people into buying something that is not necessary. To the contrary, I mostly see people telling others to pull what you pull where you pull it and how you pull it and see for yourself if you are good to go without any help. But if you find that you do need help, there is a fix.

Why would I, or anyone else, feel we need to qualify ourselves to you?

What do we know about you? You supposedly have an engineering degree and you have friends that call you "DOC" (FWIW, Bugs Bunny called Elmer Fudd "DOC"...draw your own conclusions). Because you supposedly have an Aerospace Engineering degree, makes you a more reliable source on all things GM diesel? Please!

Would you change your tone or your point of view if I told you I'm a degreed engineer as well? What if I'm a janitor?

What matters most in these types of situations is experience. There are plenty of people here with years of experience with all kinds of things that directly relate. Doesn't matter to me what job they perfom IRL or what piece of paper they have from where. There are people that have experience with OHing LLY's and also have experience with fixing them. Those are the guys I'm gonna listen to.

If after reading this, you would like to gain some experience for yourself, come out to Az. in June or July. We'll hook my trailer up to your non overheating LLY and give you some experience and some real world knowledge.

But above all this... if you don't have a problem with your truck, then good for you, but don't come one here telling people that have or have had problems, that they are full of BS.

So TX, will you take 100.00?:D more mileage sounds good to me. I'll even send you a 12-pack.....c'mon man.

FWIW, my fuel mileage gains have already paid for mine. :D

So TX, will you take 100.00?:D more mileage sounds good to me. I'll even send you a 12-pack.....c'mon man.

I find it funny Byron, that you came on saying the whole enchilada was a rip off and now you are trying to buy a v2, although a way too low of a price. :D

I will promise you one thing. If you have a V2 on your rig, you have a 99.999% chance of not overheating EVER!:D

Thanks fo putting me in the spotlight again. I really love these overheat discussions. You in the top ten responders jump all over anyone that disagrees with what your version of the truth is.

Have not updated the sig yet but have a 5th wheel now. Not too worried about heat.

However, to have an intelligent, unbiased discussion about the overheat issue there must be discloseure of numbers and facts. When you and/or any of the other overheaters discuss your situation it is rarely if ever mentioned what speed/grades and durations you were attempting. What is the load? Were you trying to pass people or just keep up? What are other pullers doing (honestly.)

I pulled a hill with my measly 5000# travel trailer that cars were slowing on (probably loss of power...) What does that mean?

Just like the guys that claim 22 MPG what are the conditions?

Hard numbers for analysis please!

How is anything being discussed considered to be "not necessary"???? In your sig you have a topper on your truck, this generally means you do not tow 5th wheels or gooseneck trailers, so we know you are not anywhere near maxing out your truck. So how do you know what happens to others who do max out their trucks? Magic seeing eye? Crystal ball? Telepathy? Some other unannounced trick to spy on the world? Please do tell how you are proving that so many people are just telling lies.

Fantastic that you are an engineer, so you can grasp that when our trucks are unable to transfer the heat the engine creates to the air via the on board heat exchanger (radiator) that the coolant temperature will continue to rise unabated. Not so tough right? By the way, engineers design things that don't work all the time, the deficiency of the LLY cooling system is just another added to the truly long list. ;) Pretty smart engineer guys designed exploding Space Shuttles and F-15 Eagles with nose sections that fall off, guess they intended for those things to happen . .. . ... ....

Thanks fo putting me in the spotlight again. I really love these overheat discussions. You in the top ten responders jump all over anyone that disagrees with what your version of the truth is.

Have not updated the sig yet but have a 5th wheel now. Not too worried about heat.

However, to have an intelligent, unbiased discussion about the overheat issue there must be discloseure of numbers and facts. When you and/or any of the other overheaters discuss your situation it is rarely if ever mentioned what speed/grades and durations you were attempting. What is the load? Were you trying to pass people or just keep up? What are other pullers doing (honestly.)

I pulled a hill with my measly 5000# travel trailer that cars were slowing on (probably loss of power...) What does that mean?

Just like the guys that claim 22 MPG what are the conditions?

Hard numbers for analysis please!


So again, this post just goes to show that you have not read through all of the overheating threads. The info you are asking for is posted through this site hundreds of times. Please, you make yourself more and more foolish with every post. Go read for a few weeks then come back with some knowledge for these discussions.

Thanks fo putting me in the spotlight again. I really love these overheat discussions. You in the top ten responders jump all over anyone that disagrees with what your version of the truth is.

Have not updated the sig yet but have a 5th wheel now. Not too worried about heat.

However, to have an intelligent, unbiased discussion about the overheat issue there must be discloseure of numbers and facts. When you and/or any of the other overheaters discuss your situation it is rarely if ever mentioned what speed/grades and durations you were attempting. What is the load? Were you trying to pass people or just keep up? What are other pullers doing (honestly.)

I pulled a hill with my measly 5000# travel trailer that cars were slowing on (probably loss of power...) What does that mean?

Just like the guys that claim 22 MPG what are the conditions?

Hard numbers for analysis please!
I for one am not going to spoon feed you the information that has already been presented just because you are too lazy to read through the existing threads. I'd be more than happy to point you to the threads however, so if you really are interested in the information, please read the following threads in their entirety.
http://www.dieselplace.com/forum/showthread.php?t=170192&highlight=overheat

http://www.dieselplace.com/forum/showthread.php?p=1675766#post1675766

http://www.dieselplace.com/forum/showthread.php?t=127865&highlight=overheat

http://www.dieselplace.com/forum/showthread.php?t=14625&highlight=overheat

http://www.dieselplace.com/forum/showthread.php?t=125320&highlight=overheat

http://www.dieselplace.com/forum/showthread.php?t=38208&highlight=overheat

http://www.dieselplace.com/forum/showthread.php?t=125305&highlight=overheat

We'll talk again in March.

One point to remember;

Peasants built the Ark, Engineers built the Titanic.

This coming from an Electrical Engineer with 20 years of control systems knowledge.


Peasants might have built the Ark. They did not invent the boat. If you can prove the Ark exists I will bet there was an example created by engineers that the peasants followed in their design process.

Engineers didn't sink the Titanic - the driver did. Again if you can show that the engineers failed I would like to have that discussion.

Common people do common and uncommon things sometimes.

As an engineer you must have had to evaluate specifications for the control systems you have designed. If a 12 volt power supply were connected to a 5 volt system, were the expectations that the system would still function normally? What about 24?

Main point is if your going to chip your engine and plan on doing mods that's great. But it is not the fault of the design engineer. You need to plan on updates to everything on the truck including transmission, coooling, gears, etc...

Why not just buy the 4500? (and get the custom truck bed that you need...)

I have seen enought to know I am just going to be stalked from here on in until they make this the third thread of overheat.

Not a problem just going to stay away for awhile and let the thing run it's course...

Peasants might have built the Ark. They did not invent the boat. If you can prove the Ark exists I will bet there was an example created by engineers that the peasants followed in their design process.

Engineers didn't sink the Titanic - the driver did. Again if you can show that the engineers failed I would like to have that discussion.

Common people do common and uncommon things sometimes.

As an engineer you must have had to evaluate specifications for the control systems you have designed. If a 12 volt power supply were connected to a 5 volt system, were the expectations that the system would still function normally? What about 24?

Main point is if your going to chip your engine and plan on doing mods that's great. But it is not the fault of the design engineer. You need to plan on updates to everything on the truck including transmission, coooling, gears, etc...

Why not just buy the 4500? (and get the custom truck bed that you need...)

WoW:eek: Again....If you read(I know it is overrated for some) you would find out that there are many including myself that overheat completely STOCK.

However, to have an intelligent, unbiased discussion about the overheat issue there must be discloseure of numbers and facts. When you and/or any of the other overheaters discuss your situation it is rarely if ever mentioned what speed/grades and durations you were attempting. What is the load? Were you trying to pass people or just keep up? What are other pullers doing (honestly.)

I can give you a quick insite to my experiance, no bs at all.

Simple 160 mile pull from Houston to Austin,TX in August- OAT high 90s, traveling US290, very moderate inclines that last no longer than 1/2 mile then go back down or level out. Very flat here.

Trailer is an '05 Desert Fox bumper pull toyhauler (see garage for pics), total height- 12'9" starting out over the 11' mark and going up. Only one road bike in the back, total GCVW was 19,x00# (can't find the weight slip at the moment).

Fan cluch activated less than 5 miles into our trip doing 65mph on flat land. Randomly shut down every once i a while, but basicly staied active the whole trip. 100miles into the trip 70mph, fan was already enguaged,a slight uphill made my temp guage swing to the right. Via Tech2, I snapshot what was going on and saw 227*:eek:. The next time it happened was a slightly higher incline and a little longer (say 3/4 to 1 mile), guage swings right, 235* via Tech2, crest hill, temp comes down.

On a seperate trip, same basic load but traveled into the Hill Country, every uphill got me at least 237*, only to come down after cresting the hill. Was going down hill at 75+, uphill bearly 50-55mph. My 6.0l gasser did better than that!!

What do you think more hill would do??? Steaper??? I was light that time, I've weighed in before in the 21,400# range.

BTW, when I was loaded to 21,400 went deep into the Hill Country (actully traveled the same road TxC did on the famous OH video) V2 installed, cruise set at 70 for more than 150 miles moderate hills, no fan enguagement at all. Highest temp seen the whole trip was 207# and I was pushing it on every steap hill.:)

I have seen enought to know I am just going to be stalked from here on in until they make this the third thread of overheat.

Not a problem just going to stay away for awhile and let the thing run it's course...

Why are you leaveing so soon??? We were just starting to have fun.:confuzeld:hug:

Why not just buy the 4500? (and get the custom truck bed that you need...)

Uhhh.... if you would have read all of the reports of overheating problems that have now been linked to this thread, you'd see, IIRC, that the 4500 (Topkicks/Kodiaks) have the same reported overheating issues, but the evil TxC hasn't engineered a solution for that one yet (or hadn't as of the last time I read through all of the overheating threads).

Oh wait... nevermind... they're all dreaming/unnecessarily panicking/lying according to you.

:stirthepo

However, to have an intelligent, unbiased discussion about the overheat issue there must be discloseure of numbers and facts. When you and/or any of the other overheaters discuss your situation it is rarely if ever mentioned what speed/grades and durations you were attempting. What is the load? Were you trying to pass people or just keep up? What are other pullers doing (honestly.)


If you actually took the time to read the post that are here you would have the answers that you seek. I have posted my conditions as have many others.

7000# 16' long 8' high flat front enclosed trailer up a 6 degree grade for about 5 miles at the beginning summer( 85* OAT).

Started up the hill at 65-70 mph and at the top I was struggling to hit 55mph. I got all the DIC warnings and the gauge was pegged. This was when the truck was bone stock. I have seen the truck get as high as 237* since with the Edge set on 0 and the OAT at 45*. To me that is way to hot for the load and OAT.

I don't know what would happen with a real load and higher temps. I do know this much, There were trucks (PSD & Cummins) pulling much bigger loads than myself that were blowing by me going up the hill. All I was trying to do was maintain a safe speed and make it to the top of the hill without getting run the hell over by semi's and other pickups. Something I would have thought to be a realtively easy task when I bought the truck.

I'm not trying to tell you what will happen or what yo need. I am simply telling you what has happened and what I plan to do to correct the problem. I am getting the V2 w/fan and not gonna worry about it anymore.

PS I pulled this same load with a 1/2ton GMC 5.3L w/ 140K miles and never got hot. Now, Tell me again that I don't have an OH'er.

I find it funny Byron, that you came on saying the whole enchilada was a rip off and now you are trying to buy a v2, although a way too low of a price. :D

I will promise you one thing. If you have a V2 on your rig, you have a 99.999% chance of not overheating EVER!:D

Yeah, the rip-off thing was my bad. The pic I saw did not have the electric fan set up, so I thought it was just the other stuff for $1800+......so yeah, I was like:wtf1: BUT, if I do ever have these problems, I will be looking to TXChris to solve the problem........i'll still pay $100 and advertise for him for free!!!!:D:eek:

Serious question...... has anyone had OH issues that have the ZF 6-Speed? I am asking because I wonder if the load of the tranny cooler would also add to the problem.

Serious question...... has anyone had OH issues that have the ZF 6-Speed? I am asking because I wonder if the load of the tranny cooler would also add to the problem.


I'm not sure I have heard of any overheating with the hand shaker. Still has the same rad and cooling system I can't imagine there would be a difference.

The tranny cooler exchanges / expells its heat in front of the stack so an automatic tranny adds to the heat woes.

The people with the V2 see cooler tranny temps because the overall stack stays cooler helping the tranny cooler dissapate heat better. A little side benefit.

Nope, I am not a diesel owner but I follow the OH discussions because they have helped me in some of my own applications for my Dune toy.

As a side note,... there really is alot of information in these threads that people should brush up on before they jump in. It is tough reading because it is mixed with alot of emotion but there are details, graphs, conditions, elevations, configurations, examples, different methodology, trial and error with quick and well thought out ideas, etc. It starts around 2004.5 I believe and grows. Quite a few people spent alot of time and money (their own time and money) working on solutions for everyone experiencing this issue.

The Engineers should be able to locate this info and interpret the graphs pretty quick by skimming the threads. Most of the graphs are based around cause and effect items such as elevation, boost, cooling capacity, rad, temps, oil temps, engine load, to name a few. Nice data and hard facts. Pictures of weight tickets, truck configs from stock to performance. Interesting piece of info though, if I recall correctly, most "tuned" trucks performed better then stock in that it took them a little longer to heatsoak then stock but they fell prey to the same issue. That led to alot of tuning efficiency work vs boost vs CAC cooling efficiency, etc.

It goes on and on. I bring this up in the hope that a few realize why people are rolling their eyes when some of the basic questions are asked as if this problem just came up yesterday. Most of the passionate responses are the people that invested the significant amount of time over the years on the issue. All they are asking is to spend some spare time and brush up on the topic. Heck, I did and I don't even own a clacker! (heh! I know, Just a Jeeper having fun) I learned a few things to help cool down a 6 banger Jeep that is Supercharged and NOS'd that lives in the Phoenix desert.

I'm one of those guys driving a 35 foot Ford v10 RV pulling a 24 foot trailor with a Jeep, quads, gas, wood, tools, welder, and miscellaneous passing a few of these LLY's on the way to the Dunes from Phoenix to California wondering how I could do that.

;-)
4wheeln

What do we know about you? You supposedly have an engineering degree and you have friends that call you "DOC" (FWIW, Bugs Bunny called Elmer Fudd "DOC"...draw your own conclusions). Because you supposedly have an Aerospace Engineering degree, makes you a more reliable source on all things GM diesel? Please!

:rotflmao:rotflmao!!

Serious question...... has anyone had OH issues that have the ZF 6-Speed? I am asking because I wonder if the load of the tranny cooler would also add to the problem.

IMHO the manuals will be a bit harder to overheat. There is a lot of heat off the tranny cooler that has to go through the stack and contributes to heating issues.

Just my $.02

IMHO the manuals will be a bit harder to overheat. There is a lot of heat off the tranny cooler that has to go through the stack and contributes to heating issues.

Just my $.02

Its not just the little tranny cooler up front, its the tranny cooler in the rad that causes most of the extra load from the transmission to the coolant. The rad cools the tranny fluid first, then the little cooler up front cools the tranny fluid. I have measured tranny output to the rad under extreme loads and found it to be hot enough to boil dexcool on the low pressure side of the system, but it took a certain set of circumstances to get that to happen. Still its possible. This would be a bad situation, because you would be sending aereated coolant right to the water pump, dealing you a double death blow.

So yes, the manuals will be more difficult to overheat, they have less load on the cooling system.

The tranny cooler exchanges / expells its heat in front of the stack so an automatic tranny adds to the heat woes.

The people with the V2 see cooler tranny temps because the overall stack stays cooler helping the tranny cooler dissapate heat better. A little side benefit.

Nope, I am not a diesel owner but I follow the OH discussions because they have helped me in some of my own applications for my Dune toy.

As a side note,... there really is alot of information in these threads that people should brush up on before they jump in. It is tough reading because it is mixed with alot of emotion but there are details, graphs, conditions, elevations, configurations, examples, different methodology, trial and error with quick and well thought out ideas, etc. It starts around 2004.5 I believe and grows. Quite a few people spent alot of time and money (their own time and money) working on solutions for everyone experiencing this issue.

The Engineers should be able to locate this info and interpret the graphs pretty quick by skimming the threads. Most of the graphs are based around cause and effect items such as elevation, boost, cooling capacity, rad, temps, oil temps, engine load, to name a few. Nice data and hard facts. Pictures of weight tickets, truck configs from stock to performance. Interesting piece of info though, if I recall correctly, most "tuned" trucks performed better then stock in that it took them a little longer to heatsoak then stock but they fell prey to the same issue. That led to alot of tuning efficiency work vs boost vs CAC cooling efficiency, etc.

It goes on and on. I bring this up in the hope that a few realize why people are rolling their eyes when some of the basic questions are asked as if this problem just came up yesterday. Most of the passionate responses are the people that invested the significant amount of time over the years on the issue. All they are asking is to spend some spare time and brush up on the topic. Heck, I did and I don't even own a clacker! (heh! I know, Just a Jeeper having fun) I learned a few things to help cool down a 6 banger Jeep that is Supercharged and NOS'd that lives in the Phoenix desert.

I'm one of those guys driving a 35 foot Ford v10 RV pulling a 24 foot trailor with a Jeep, quads, gas, wood, tools, welder, and miscellaneous passing a few of these LLY's on the way to the Dunes from Phoenix to California wondering how I could do that.

;-)
4wheeln

I just thought this one needed to be posted again, all except for the Ford part!):h .:thumb:

Its not just the little tranny cooler up front, its the tranny cooler in the rad that causes most of the extra load from the transmission to the coolant. The rad cools the tranny fluid first, then the little cooler up front cools the tranny fluid. I have measured tranny output to the rad under extreme loads and found it to be hot enough to boil dexcool on the low pressure side of the system, but it took a certain set of circumstances to get that to happen. Still its possible. This would be a bad situation, because you would be sending aereated coolant right to the water pump, dealing you a double death blow.

So yes, the manuals will be more difficult to overheat, they have less load on the cooling system.

I knew that but forgot to mention that. I believe that all auto trannys have their lines run through the radiator for cooling and the cooler in front of the stack is an additional "air" cooler.

I was focussing on the heat from that "air" cooler being absorbed into the stack (CAC, AC, RAD) adding to the load that was already there. So the tranny impacts the rad efficiency but it also impacts the CAC cooling for the intake air and the combo again impacts the air that is used to cool the rad.

Time for me to disappear again to the sidelines and wait for that beautiful technical info that does come out of these discussions...

;-)
4wheeln

I knew that but forgot to mention that. I believe that all auto trannys have their lines run through the radiator for cooling and the cooler in front of the stack is an additional "air" cooler.

I was focussing on the heat from that "air" cooler being absorbed into the stack (CAC, AC, RAD) adding to the load that was already there. So the tranny impacts the rad efficiency but it also impacts the CAC cooling for the intake air and the combo again impacts the air that is used to cool the rad.

Time for me to disappear again to the sidelines and wait for that beautiful technical info that does come out of these discussions...

;-)
4wheeln

As silly as it sounds, most all auto tranny "cooler" lines are run through the radiator so they maintain a minimum level of heat during super cool weather driving. They need to be run at least 160* F to keep moisture down and if there was just the front mounted cooler they very easily could drop well below that.

All in all, if you're really worried about it, mount a huge trans cooler up front and bypass the radiator all together. That or put one under the truck with its own cooling fan on it.

The blocking of airflow through the IC and radiator by the little trans cooler, or pre-heating the air, is of almost no real concern at all.

The blocking of airflow through the IC and radiator by the little trans cooler, or pre-heating the air, is of almost no real concern at all.

It is when you are on the edge, so is the AC condensor. Also the manny tranny guys were detuned from the factory.

I agree with you and wouldnt bypass the radiator portion due to needing the heat in the winter time.

Its not just the little tranny cooler up front, its the tranny cooler in the rad that causes most of the extra load from the transmission to the coolant. The rad cools the tranny fluid first, then the little cooler up front cools the tranny fluid. I have measured tranny output to the rad under extreme loads and found it to be hot enough to boil dexcool on the low pressure side of the system, but it took a certain set of circumstances to get that to happen. Still its possible. This would be a bad situation, because you would be sending aereated coolant right to the water pump, dealing you a double death blow.

So yes, the manuals will be more difficult to overheat, they have less load on the cooling system.

Soooooooo, $100 down and $1 a day is all I can afford! Whaddya say?:D:beerchug: But seriously, thanks for the info....much appreciated. $150? Final offer!!

Soooooooo, $100 down and $1 a day is all I can afford! Whaddya say?:D:beerchug: But seriously, thanks for the info....much appreciated. $150? Final offer!!

Dude why don't you trade him for that horse you're ridin. It's proly worth $150 bucks------ ya think?

ALL LLYs OVERHEAT.....:D

Just:stirthepo a bit...I'm bored.:D

Also the manny tranny guys were detuned from the factory.


Another good point that gets forgotten, the manual trucks have less power which equals less heat to begin with.

ALL LLYs OVERHEAT.....:D

Just:stirthepo a bit...I'm bored.:D
sux when everyone watching agrees with you huh? :lol:

Just like the guys that claim 22 MPG what are the conditions?

Hard numbers for analysis please!

Ask and ye shall receive!

My truck: 2005 GMC Sierra 2500HD, CCSB, Duramax/Allison, SLE, 265/75/16 'E' Bridgestone Revo's, stock gears. Installed TXC V2 w/fan, Fan Damn Twin Electrics, and CAI in April 2007.

Over the course of the summer of 2007, I drove from south central Wisconsin to the southwest suburbs of Chicago, IL to visit my fiance (now wife). Very flat drive. Full tank of fuel, me(225 lbs), my 2 dogs (80 & 65lbs), a bag for the weekend, and dog food (25 lbs combined max). OAT of 84 driving there, 88 degrees back. Truck never went above 207 degrees, according to my Actron scanner with data logging. A/c was on for the return trip. Hand calculated mileage was 21.8 MPG; my speedo/odometer has been updated for the tire change. I was carefull to fill the tank the same way both times. Why? Because I had calculated my mileage on previous trips, and wondered if it was accurate. I did not think the truck was capable of that good of mileage. My previous half ton GMC Extended cab could only muster 18MPG.

Granted, I went easy on the throttle, but not to the point that I held up traffic. I just didn't "get on it". Yeah, I have it a bit easier up here in the Midwest than the Southern folk, but the numbers don't lie, and I have no reason to exaggerate. I'm not an engineer; I do commercial/industrial HVAC service. I took 2 years of auto service training, one in HS, the other at a tech school. I'm a lifetime gearhead. I've done countless auto repairs, and have been involved with 2 frame up restorations. I've also done 4 motors, 2 of which were raced. I won't say I know it all, but I have a wealth of experience to draw on. 20+ MPG is possible!

P.S. The Borla exhaust in my sig was not installed until recently, the numbers I gave were with the stock exhaust.

Still here RT?

yep, nice and warm.

Mised senior night at the club though.

Gotta get some rest, more work tomorrow!

Darn senior nights!!!

Rttoys , bigdaddy650r , blksmok , Quiky One , sodfarmer , TxChristopher+ , way_out_there

Are we all foaming at the mouth waiting to pounce on our next victum????

Nah, just want to see the truth come out.

I may have said it before, but I'll repeat it: I have never overheated my truck prior to the install of TXC's stuff. It is an "insurance policy" for me. But it is reaping other benefits that I gain from.

With that, I have to bid ya'll goodnight!!!

Rttoys , bigdaddy650r , blksmok , Quiky One , sodfarmer , TxChristopher+ , way_out_there

Are we all foaming at the mouth waiting to pounce on our next victum????

You bet I want to scare some more people into buying a V2 because I make alot of money of them. J/k LOL

Hey you only listed 7 of us. Where are the other 3 overheaters?

That's a big thing too, that most don't understand. These are some of the only mods that will pay for themselves over time.

You bet I want to scare some more people into buying a V2 because I make alot of money of them. J/k LOL

Hey you only listed 7 of us. Where are the other 3 overheaters?


:D asleep:D

You know what I really wish? I wish someone would take up Chris on the $5000 challenge. I believe I would drive to AZ to see the poor suckers face when his truck was puking on the side of the road. Especially since he would be the one on here having a freak fit how his truck would not overheat. :D

Ya, but it wold take a die hard to do it. Plus, there would be a lot of 'you tampered with this', 'that's not the load I carry', etc.

These are good trucks and most will never see anything more than a lot of fan actuation and maybe a quick swing of the guage to the right, but the ones that meet the criteria are in a world of hurt. If I ever got out of Texas pulling my trailer (pre V2) I would be the guy sitting on the side of the road saying 'mine has never done that before'.

Yeah it's a funny thing. No one wants to admit their Gm tow monster might overheat. My dad bought an 05 Dmax and then bought a new 5er. It's not Blksmok big, but good sized. He was getting ready to leave for Canada this summer and I was trying to tell him he might get warm pulling his trailer. He thought it was just my truck that would get hot. So I finally convinced him he should at least do an exhaust, but no V2. When he got back the fitst thing he told me was that he saw 230 and pulled his foot out of it. While he has not technically OHed his truck, he has no doubt he could.

Yeah it's a funny thing. No one wants to admit their Gm tow monster might overheat. My dad bought an 05 Dmax and then bought a new 5er. It's not Blksmok big, but good sized. He was getting ready to leave for Canada this summer and I was trying to tell him he might get warm pulling his trailer. He thought it was just my truck that would get hot. So I finally convinced him he should at least do an exhaust, but no V2. When he got back the fitst thing he told me was that he saw 230 and pulled his foot out of it. While he has not technically OHed his truck, he has no doubt he could.
Why do people not believe they overheat? What or why would anyone think people would complain about their trucks overheating if they were not?? As I have stated mine overheats and sounds like a school bus with the cooling fan roaring so loud you cant hardly even talk inside the cab when its on and thats most of the trip with these trucks. No I have not added a V2 or extra coolers on my truck as its all stock and Im trying for a chevy buyback under the pa lemon law. Why should I go thru all that if I can hopefully get a truck that will not overheat.

[quote=djdave33;2410076]Why do people not believe they overheat? What or why would anyone think people would complain about their trucks overheating if they were not?? As I have stated mine overheats and sounds like a school bus with the cooling fan roaring so loud you cant hardly even talk inside the cab when its on and thats most of the trip with these trucks. No I have not added a V2 or extra coolers on my truck as its all stock and Im trying for a chevy buyback under the pa lemon law. Why should I go thru all that if I can hopefully get a truck that will not overheat. [/quote

Does anyone know anything about the new dodges with the 6.7 and the new to them 6 speed auto? I am thinking about what to buy next time around. Thanks for any help,
David

[quote=djdave33;2410076]Why do people not believe they overheat? What or why would anyone think people would complain about their trucks overheating if they were not?? As I have stated mine overheats and sounds like a school bus with the cooling fan roaring so loud you cant hardly even talk inside the cab when its on and thats most of the trip with these trucks. No I have not added a V2 or extra coolers on my truck as its all stock and Im trying for a chevy buyback under the pa lemon law. Why should I go thru all that if I can hopefully get a truck that will not overheat. [/quote

Does anyone know anything about the new dodges with the 6.7 and the new to them 6 speed auto? I am thinking about what to buy next time around. Thanks for any help,
David

Read until your hearts content. :cool:

[quote=djdave33;2410083]

Read until your hearts content. :cool:


Now thats why I call some real info...

Now thats why I call some real info...
Haha I forgot to insert the link. :eek:

http://www.dieseltruckresource.com/dev/forumdisplay.php?f=114

http://www.dieseltruckresource.com/dev/index.php

Sorry about that.

Jason

Why do people not believe they overheat? What or why would anyone think people would complain about their trucks overheating if they were not?? As I have stated mine overheats and sounds like a school bus with the cooling fan roaring so loud you cant hardly even talk inside the cab when its on and thats most of the trip with these trucks. No I have not added a V2 or extra coolers on my truck as its all stock and Im trying for a chevy buyback under the pa lemon law. Why should I go thru all that if I can hopefully get a truck that will not overheat.

The time spent doing a but back far surpasses the cost of a V2. You said you've taken it into the dealer how many times??? For me to take off of work to go to the dealer over and over and over again + all the times I need my truck while it would be in the dealer (not getting fixed), the hastle with the service manager explaining they can't duplicate the consern because it doesn't do it unloaded:rolleyes:, time involved in mediation to see how GM can tell you that you have to prove the problem, better not have ANY aftermarket parts on there because that's the problem right there:rolleyes:, driveing, showing them it does it, then they buy back your truck - what you owe, - $.xx per mile driven for the period of time you owned it..............:banghead:

Now, how does $1200 for a V2 with fan sound??????

The time spent doing a but back far surpasses the cost of a V2. You said you've taken it into the dealer how many times??? For me to take off of work to go to the dealer over and over and over again + all the times I need my truck while it would be in the dealer (not getting fixed), the hastle with the service manager explaining they can't duplicate the consern because it doesn't do it unloaded:rolleyes:, time involved in mediation to see how GM can tell you that you have to prove the problem, better not have ANY aftermarket parts on there because that's the problem right there:rolleyes:, driveing, showing them it does it, then they buy back your truck - what you owe, - $.xx per mile driven for the period of time you owned it..............:banghead:

Now, how does $1200 for a V2 with fan sound??????


Im not saying 1200 is too much to spend.. actually thats quite reasonable but what Im saying is I didnt buy a new truck to have it overheat and if I can get chevy to buy it back thats what I am going to do first. You know its the whole idea of the thing. If they dont buy it back or they screw with me to much I will sell it, trade it in or keep it and buy the mods and also but the longest gmpp that I can get for the truck.

how do you all factor in the weight of your truck, trailer, max towing capacity etc when you have overheating? i believe these duramaxes should be able to pull 12,000lbs max. i have no idea about the speed limit it says in gm manual though. i know that usually you drive slower with a load behind then when you are empty especially in hilly situations. i believe that their are people that have overheating problems because not all trucks perfect from the factory but i also have to wonder if driving 65-75 even 80 mph has an influence in the overheating situation.

how do you all factor in the weight of your truck, trailer, max towing capacity etc when you have overheating? i believe these duramaxes should be able to pull 12,000lbs max. i have no idea about the speed limit it says in gm manual though. i know that usually you drive slower with a load behind then when you are empty especially in hilly situations. i believe that their are people that have overheating problems because not all trucks perfect from the factory but i also have to wonder if driving 65-75 even 80 mph has an influence in the overheating situation.

22000# is gross combined max weight, on you door it tells you all the GVWs for your truck that you cannot exceed, and we don't. If I or we were 'overloaded' then we could easily call BS on the overheat deal. Some say they have overheated towing 7000#:eek:. A 1/2 ton can pull 7k# without overheating, why can't our LLYs???

I'm pulling the same trailer, same weight, same route, same weather conditions as I did with my '99 K2500 (light duty) 6.0l gasser. I was way overloaded with that truck, it's max combined was only rated as 19000# and my current combined is around 21400#. My gasser NEVER got hot, even with the gas pedal on the floor on up hills and looseing speed because of the lack of power, why would I expect anythng less from my LLY????

Here is my last writeup from earlier http://www.dieselplace.com/forum/showpost.php?p=2405948&postcount=165 Do I seem out of line???

how do you all factor in the weight of your truck, trailer, max towing capacity etc when you have overheating? i believe these duramaxes should be able to pull 12,000lbs max. i have no idea about the speed limit it says in gm manual though. i know that usually you drive slower with a load behind then when you are empty especially in hilly situations. i believe that their are people that have overheating problems because not all trucks perfect from the factory but i also have to wonder if driving 65-75 even 80 mph has an influence in the overheating situation.

12,000 lbs max? Where did this come from? If you went to the dealer and it said on the sticker or in the manual that the truck would only keep cool if you used it to pull under GCVW and less than the posted speed limit would you be happy?

A truck should be able to pull it's Max weight without overheating with the pedal mashed to the floor for as long as I want to leave it there! My dad's old 99 350 Chevy could pull the same loads as I do now and the water temp NEVER even chaged. It didn't matter if I had the pedal mashed for one minute or for the next 250 miles.

If you are content to pull less than GCWR and pull your foot out of it in order to keep it cool then so be it, but I paid too much money for this truck to have to. I chose to fix it with the V2 because it was way cheaper than fighting the General.

12,000 lbs max? Where did this come from? If you went to the dealer and it said on the sticker or in the manual that the truck would only keep cool if you used it to pull under GCVW and less than the posted speed limit would you be happy?

A truck should be able to pull it's Max weight without overheating with the pedal mashed to the floor for as long as I want to leave it there! My dad's old 99 350 Chevy could pull the same loads as I do now and the water temp NEVER even chaged. It didn't matter if I had the pedal mashed for one minute or for the next 250 miles.

If you are content to pull less than GCWR and pull your foot out of it in order to keep it cool then so be it, but I paid too much money for this truck to have to. I chose to fix it with the V2 because it was way cheaper than fighting the General.


I read the owner's manual that is where I got 12000lbs. I have never towed and I have no idea on the subject. I was just asking for some clarification

22000# is gross combined max weight, on you door it tells you all the GVWs for your truck that you cannot exceed, and we don't. If I or we were 'overloaded' then we could easily call BS on the overheat deal. Some say they have overheated towing 7000#:eek:. A 1/2 ton can pull 7k# without overheating, why can't our LLYs???

I'm pulling the same trailer, same weight, same route, same weather conditions as I did with my '99 K2500 (light duty) 6.0l gasser. I was way overloaded with that truck, it's max combined was only rated as 19000# and my current combined is around 21400#. My gasser NEVER got hot, even with the gas pedal on the floor on up hills and looseing speed because of the lack of power, why would I expect anythng less from my LLY????

Here is my last writeup from earlier http://www.dieselplace.com/forum/showpost.php?p=2405948&postcount=165 Do I seem out of line???


No you are not out of line at all. I see where many have had frustration.
I agree that these trucks should be able to pull a lot of weight and not have any problems. Thank you for clarifying this for me

I believe that everyone has a definite and legit complaint about overheating. I also think that as long as you pull within your limits you should be fine and these overheating issues are just because of a faulty truck design from the factory. With that in mind, towing a large amount of weight up and down hills, stomping on the gas pedal will not make the situation better, I think there was an intention for people to drive within speed limits when they designed these trucks. I realize that my statements may inferiate some, that is not my intention, I just think that when you push your limits on things they tend to not work in the long haul. Just because you can do it does not mean you should do it.

Very interesting read at http://www.***************.com/forums/showthread.php?t=55448
Talking about increasing air intake flow to reduce temps.

I read the owner's manual that is where I got 12000lbs. I have never towed and I have no idea on the subject. I was just asking for some clarification

That is the limit for the reciever hitch. In GN or 5th wheel config the GCWR is much higher.

ALL LLYs OVERHEAT.....:D

Just:stirthepo a bit...I'm bored.:D

Mine doesnt, I will be towing through Houston next Friday afternoon, going to Columbus, meet me on I 10. I will be loaded (Blk Smoke size), I dont need the right lane for hill climbing. :D I could probably pull a Uhaul also.

I believe that everyone has a definite and legit complaint about overheating. I also think that as long as you pull within your limits you should be fine and these overheating issues are just because of a faulty truck design from the factory. With that in mind, towing a large amount of weight up and down hills, stomping on the gas pedal will not make the situation better, I think there was an intention for people to drive within speed limits when they designed these trucks. I realize that my statements may inferiate some, that is not my intention, I just think that when you push your limits on things they tend to not work in the long haul. Just because you can do it does not mean you should do it.

What about overheating empty on a 92 degree summer day going up a hill floored.. as you call it.. is that something you call pushing it?? lots of fan and temp gauge swinging to the the red.. maybe my 4x4 dually is too heavy empty for the engine to sustain the speed.. My old gasser 3500 8.1 never overheated either when towing 12000lbs or empty.. going the same routes and same hills, same summer days.. How would that make you feel.

What about overheating empty on a 92 degree summer day going up a hill floored.. as you call it.. is that something you call pushing it?? lots of fan and temp gauge swinging to the the red.. maybe my 4x4 dually is too heavy empty for the engine to sustain the speed.. My old gasser 3500 8.1 never overheated either when towing 12000lbs or empty.. going the same routes and same hills, same summer days.. How would that make you feel.


yes you are pushing it even emptied. all i will say is that i am sorry that you guys have had issues with overheating. i enjoy my truck and if one day i tow with it i hope not to have these overheating issues. apparently you have had some bad experiences with your truck, sometimes we don't get everything perfect in life that is the way it goes. at some point in the future i may have to give up my truck guess what, that is the way it goes. i really have nothing more to say to you that will resolve these issues

Very interesting read at http://www.***************.com/forums/showthread.php?t=55448
Talking about increasing air intake flow to reduce temps.


GM Tried that with the 06 air filter "fix." It slows the OH but does not stop it.


I believe that everyone has a definite and legit complaint about overheating. I also think that as long as you pull within your limits you should be fine and these overheating issues are just because of a faulty truck design from the factory. With that in mind, towing a large amount of weight up and down hills, stomping on the gas pedal will not make the situation better, I think there was an intention for people to drive within speed limits when they designed these trucks. I realize that my statements may inferiate some, that is not my intention, I just think that when you push your limits on things they tend to not work in the long haul. Just because you can do it does not mean you should do it.

For the most part, everyone is just trying to maintain a safe speed limit. When they refer to stomping on the go pedal, they are attempting to keep the truck at the current speed. Doing 45-55 in a 75 MPH zone isn’t safe, especially on two lane roads with not turn outs or safe places to stop when the truck pukes coolant all over the place. Add to that all the maniacs speeding buy you cause your slowing them down!! I know what my wife would say to me in a situation like that….:mad::mad::mad:

I sure hope that none of our “Heavy Haulers” are going faster than posted speed limits!:rolleyes:

yes you are pushing it even emptied. all i will say is that i am sorry that you guys have had issues with overheating. i enjoy my truck and if one day i tow with it i hope not to have these overheating issues. apparently you have had some bad experiences with your truck, sometimes we don't get everything perfect in life that is the way it goes. at some point in the future i may have to give up my truck guess what, that is the way it goes. i really have nothing more to say to you that will resolve these issues

why do you have a power chip programmer on your truck?? Seems to me if the factory wanted one on there they would have installed it at the factory that way. Its your choice to put a programmer on your truck.. just like its my choice to push the hammer to the floor to crest a hill..

Dude why don't you trade him for that horse you're ridin. It's proly worth $150 bucks------ ya think?

Yeah.....$150 bucks x's 100.....anyway's, a good cutting horse is priceless!!!:D She's too sweet for some dumb ol' cooling system upgrade !! J/K TX!

GM Tried that with the 06 air filter "fix." It slows the OH but does not stop it.




For the most part, everyone is just trying to maintain a safe speed limit. When they refer to stomping on the go pedal, they are attempting to keep the truck at the current speed. Doing 45-55 in a 75 MPH zone isn’t safe, especially on two lane roads with not turn outs or safe places to stop when the truck pukes coolant all over the place. Add to that all the maniacs speeding buy you cause your slowing them down!! I know what my wife would say to me in a situation like that….:mad::mad::mad:

I sure hope that none of our “Heavy Haulers” are going faster than posted speed limits!:rolleyes:


i 100 percent agree with you. but doing 75 mph up a steep hill with a giant load????? with these trucks? even big rigs don't do that. on a straight road doing 75 loaded should be fine.

why do you have a power chip programmer on your truck?? Seems to me if the factory wanted one on there they would have installed it at the factory that way. Its your choice to put a programmer on your truck.. just like its my choice to push the hammer to the floor to crest a hill..


very true but i don't romp on my truck when cresting a hill. in fact i do not romp on my truck much at all. and considering the myriad of tuners mine is pretty mild. i also have a six inch lift and 35 inch tires. and to boot an aftermarket dry filtered air intake system. i have no idea why you are so upset and/or agitated and i was just trying to clarify a point.

i 100 percent agree with you. but doing 75 mph up a steep hill with a giant load????? with these trucks? even big rigs don't do that. on a straight road doing 75 loaded should be fine.

With the loads I haul there are many hills my truck won't pull at 75, but I shouldn't have to pull my foot out of it and go yet slower just so I don't overheat. There were many times before I installed my v2 that I would be going 55 - 60 and had to pull my foot out of the throttle and slow down even further to avoid an overheat. This is what I am complaining about.

My 05' Silverado overheats just about every time I haul my 32.5 ft 5th wheel. And It dosen't have to be hot outside either. Last August going up Monarch Pass in Colorado with the temp in the mid 70s and raining it started overheating... again! :mad:
I plan on doing something before camping season gets hear, I'm just not sure
of what. Is the V2 really as good as some claim it to be?

My 05' Silverado overheats just about every time I haul my 32.5 ft 5th wheel. And It dosen't have to be hot outside either. Last August going up Monarch Pass in Colorado with the temp in the mid 70s and raining it started overheating... again! :mad:
I plan on doing something before camping season gets hear, I'm just not sure
of what. Is the V2 really as good as some claim it to be?


Yes............

My 05' Silverado overheats just about every time I haul my 32.5 ft 5th wheel. And It dosen't have to be hot outside either. Last August going up Monarch Pass in Colorado with the temp in the mid 70s and raining it started overheating... again! :mad:
I plan on doing something before camping season gets hear, I'm just not sure
of what. Is the V2 really as good as some claim it to be?
How many miles are on your truck and how many miles were on it the first time you took it to back to the dealer for the overheating issue? Maybe you can get gm to do something for you. There are a lot of unhappy duramax owners and the claims against gm is mounting very fast. Mine is low miles and the first time I took mine back it only had 1613 miles on it. These trucks should not be overheating and we should not have to pull off the side of the road or creep up hills..

GM Tried that with the 06 air filter "fix." It slows the OH but does not stop it.




For the most part, everyone is just trying to maintain a safe speed limit. When they refer to stomping on the go pedal, they are attempting to keep the truck at the current speed. Doing 45-55 in a 75 MPH zone isn’t safe, especially on two lane roads with not turn outs or safe places to stop when the truck pukes coolant all over the place. Add to that all the maniacs speeding buy you cause your slowing them down!! I know what my wife would say to me in a situation like that….:mad::mad::mad:

I sure hope that none of our “Heavy Haulers” are going faster than posted speed limits!:rolleyes:

The 2006 air cleaner assembly seems to give the truck more power but it does not solve the overheating problem. How many of you guys had gm install the 2006 air intake assembly?

My 05' Silverado overheats just about every time I haul my 32.5 ft 5th wheel. And It dosen't have to be hot outside either. Last August going up Monarch Pass in Colorado with the temp in the mid 70s and raining it started overheating... again! :mad:
I plan on doing something before camping season gets hear, I'm just not sure
of what. Is the V2 really as good as some claim it to be?

The V2 is the single best mod I have put on my truck. I never overheat, get better fuel economy, and seldom hear the blasted fan. Let me put it this way. If I could only have 1 mod I would put my stock exhaust back on and take off my chip. It's that good. :D

I am just curious does the v2 void your warranty? I bet it would because you are modifying the cooling system

I don't know of anyone haveing a problem with it. As far as the dealer I went to, the service manager's comment was 'Good, now I don't have f with it anymore'.

To me it was simple. I fixed what you (GM) didn't want to, if they want to void my warrenty because of the V2, gloves are off, it's time to fight.

My service manager called over a couple other service guys and then went and got HIS manager to all come out and look at it. They all liked it and wanted information on where to get it so they could direct their other OH LLY customers to a solution, because GM doesn't have one.
Actually, last I heard, my service manager told me GM did finally come out with a fix and it supposedly looks exactly like the V2 but he said they are charging around 2K for it. He told me, he's seen only one and based on seeing it and seeing mine and what I paid for mine, he'd go with what I got.

I never had any OH issues up until now. Ive pulled my enclosed up the poudre valley at ease at the speed limit (65), and I assumed I needed a much bigger trailer to cause my truck to overheat. However this past weekend going from Sterling to Grand Junction, going up I 70, I was close to overheating, (and it was 25 degrees outside). It was very windy, but I was only pulling an empty 18ft enclosed. Water temp only showed slightly over 210 but the tranny temp gauge was climbing like crazy, and started worrying me. I was in the right lane with the semis and was only doin around 45 mph. Although it never actually overheated this time, I would hate to try that in the middle of the summer. I think Im going to get the V2 before I have to experience a real OH issue. Are most guys only running the V2 with out the fans, and are those alone stopping the OH?

The V2 will take care of it, 99% of the time. The best thing about adding the fan is when you are pulling at slow speeds or have a condition when ram air is not present the fan kicks in and everything is good. The V2 with fan is the best way to go.

If you choose the V2 with fan, with what you are pulling and your past experiances, you could run in 'stealth mode' (not run the air damning, just let the fan do the work) and you will never see the V2.

So about 1100 bucks for the fan and V2, and are you guys running an additional tranny cooler as well or just using the stock one?

It depends. Some are, some aren't, but it (additional tranny cooler) is not necessary to cure the OH problem.

Awesome, so I won't install it right away. How about mag tranny pans, has anybody tried these to cure heating problems?

After installing my V2, my trans temps have yet to get over 200*. It usually sits about one click under the 200 mark when towing, about the 150 range not towing.

Just to add, not only are the ECT and tranny temps in check, my ac is cooler, truck runs stronger and I picked up a solid 1 mpg towing and 1+ not towing. Like a lot of us have said before, it's one of the only mods that will pay for itself over time.:)

O'ya, and you will no longer loose your hearing due to not hearing that clutch fan enguaging the entire trip.:) Money saved, due to not going to need hearing aids in the future.:D

After I receive the V2 and fan and install it, I'm also going to install a new tranny cooler rated for 24000 lbs, since my truck is only used, during the RV season, winter use and over cooling won't be an issue. I can't wait for the V2/fan to arrive so I can start playing with my truck again.

Ron

I am just curious does the v2 void your warranty? I bet it would because you are modifying the cooling system

Been to the dealer twice since the V2 install and no problems at all. I'm pretty sure GM wouldn't want to touch it with a ten foot pole given their experience with this whole lly overheat situation.

After I receive the V2 and fan and install it, I'm also going to install a new tranny cooler rated for 24000 lbs, since my truck is only used, during the RV season, winter use and over cooling won't be an issue. I can't wait for the V2/fan to arrive so I can start playing with my truck again.

Ron

Over cooling is not an issue, and is not possible, the V2 is thermostatically controlled and has no effect when the truck is in bypass mode.

Over cooling is not an issue, and is not possible, the V2 is thermostatically controlled and has no effect when the truck is in bypass mode.
I think he was talking about the tranny cooler he is buying, but I have been wrong many times before!

Yes, I was thinking transmission.

Ron

That could be an issue I never thought about over cooling, and I do drive it during the winter. Would the addition of another tranny cooler be too much?

My 05' Silverado overheats just about every time I haul my 32.5 ft 5th wheel. And It dosen't have to be hot outside either. Last August going up Monarch Pass in Colorado with the temp in the mid 70s and raining it started overheating... again! :mad:
I plan on doing something before camping season gets hear, I'm just not sure
of what. Is the V2 really as good as some claim it to be?

I plan on doing something about mine too...NO MORE DURAHEATS FOR ME..

I think some of my problem this last week was because my speeds were so slow. It was snowing and hard to see so the speeds were around 35-40 mph, thus not allowing much air flow. But it just seemed my truck was workin awful hard pulling such a small trailer, as it downshifted a couple of times to stay even at 40. But this may be because the RPMs were so low with that much wind. It had to downshift to get power.

Over cooling is not an issue, and is not possible, the V2 is thermostatically controlled and has no effect when the truck is in bypass mode.


what is the benefit of gettin the fan too??? i dont tow any, and if my started the overheating this summer, then i would get the V2, but didnt know if it itself would cure the high temps, & fan running alot, or if i needed the fan too???? thanks

what is the benefit of gettin the fan too??? i dont tow any, and if my started the overheating this summer, then i would get the V2, but didnt know if it itself would cure the high temps, & fan running alot, or if i needed the fan too???? thanks
When you own a LLY from my experience I would spend the money and get all you can to cool the beast.. How do you like that LOUD FAN??

When you own a LLY from my experience I would spend the money and get all you can to cool the beast.. How do you like that LOUD FAN??
LOUD STOCK FAN THAT IS

LOUD STOCK FAN THAT IS

Either that or trade it in for something that dont overheat or sound like a school bus..

what is the benefit of gettin the fan too??? i dont tow any, and if my started the overheating this summer, then i would get the V2, but didnt know if it itself would cure the high temps, & fan running alot, or if i needed the fan too???? thanks

If you are not towing or never plan on towing, then I would eliminate the stock fan and get the Fan Damn.

If you plan on towing and get hot then, the V2 will take care of it, 99% of the time. The best thing about adding the fan to the V2 (different than the Fan Damn) is when you are pulling at slow speeds or have a condition when ram air is not present the V2 fan kicks in and everything is good. The V2 with fan is the best way to go for overheating conditions.

Can someone send me pics of this item? Our computers over here limit what we can see. Has GM ever said what the problem is or does anyone know the difference between the cooling on the LLY and LBZ. Seems to me that selling the LLY at a $10,000 reduction in price from MSRP would get rid of these trucks and put them in the hands of consumers. Hmmmm sounds like the GM buy down phase of 2005. Then disavow any remedies later on would prevent them from having to deal with it so much. I don't doubt that a lot are having temp problems but I just never saw it when I was towing. I had mentioned this in an earlier post but now I read of someone pulling a much lighter load than mine in cooler temps. Such a thing as a being built on Friday kinda thing or total engineering problems. I'm trying to figure out what GM did between the LB7 and LBZ to create this problem. I like my truck but if I'm not going to be driving it much for 3 years then I think I might be better off selling it and getting rid of the problem. Flip side is I'll have a new/used truck waiting for me but will I have seal problems. So many choices. One article mentions the pre 2007 trucks being the hotrods of the diesel pickup arena. Will the LLY ever make it into that arena? The LBZ does and so does the LB7 but will poor Lilly be left alone at the prom? What mechanical issues make her different? Better rods, fueling, 32 bit processor, cooling, piston upgrade etc. I'm trying to convince myself why I should keep this truck with 20,000 miles, when it has become a mental issue of not being near it and just seeing the debts versus the romance of having my only new truck. Ok I'm loosing all mental faculties and just babbling. I'm outta here. Cheers.

Can someone send me pics of this item? Our computers over here limit what we can see. Has GM ever said what the problem is or does anyone know the difference between the cooling on the LLY and LBZ. Seems to me that selling the LLY at a $10,000 reduction in price from MSRP would get rid of these trucks and put them in the hands of consumers. Hmmmm sounds like the GM buy down phase of 2005. Then disavow any remedies later on would prevent them from having to deal with it so much. I don't doubt that a lot are having temp problems but I just never saw it when I was towing. I had mentioned this in an earlier post but now I read of someone pulling a much lighter load than mine in cooler temps. Such a thing as a being built on Friday kinda thing or total engineering problems. I'm trying to figure out what GM did between the LB7 and LBZ to create this problem. I like my truck but if I'm not going to be driving it much for 3 years then I think I might be better off selling it and getting rid of the problem. Flip side is I'll have a new/used truck waiting for me but will I have seal problems. So many choices. One article mentions the pre 2007 trucks being the hotrods of the diesel pickup arena. Will the LLY ever make it into that arena? The LBZ does and so does the LB7 but will poor Lilly be left alone at the prom? What mechanical issues make her different? Better rods, fueling, 32 bit processor, cooling, piston upgrade etc. I'm trying to convince myself why I should keep this truck with 20,000 miles, when it has become a mental issue of not being near it and just seeing the debts versus the romance of having my only new truck. Ok I'm loosing all mental faculties and just babbling. I'm outta here. Cheers.

Mine has the same mileage on it and is the same truck basically...I say BITE THE BULLIT ...trade it in or sell it while you can still get something for it.. JUST SAY NO TO THE LLY's:mad: