Get to take a new GMT 900 on Vacation [Archive] - Diesel Place : Chevrolet and GMC Diesel Truck Forums

: Get to take a new GMT 900 on Vacation


dls64chev
12-19-2006, 05:14 PM
Brother just called me from work to inform me of what our travel vehicle for Glamis California was. Seems he has scored a brand new GMT-900 extended cab LMM/ally. Looking forward to driving that baby. I'll let ya know how it was when I get back. :D

84jeepjohn
12-19-2006, 05:53 PM
Get some pics!!!!!!!

dls64chev
12-19-2006, 06:09 PM
I'll do my best.

dls64chev
12-19-2006, 06:11 PM
From Michigan to Cali right through the mountains should break her in right. Oh well, its going to the crusher anyways.

Jaybeecon
12-19-2006, 07:34 PM
Oh well, its going to the crusher anyways.

Can you elaborate on that? (Note to self: I'm not sure I want to hear this.....it just sounds so wrong)

davecharles
12-19-2006, 08:23 PM
Take lots of notes and pictures. When will you be back to post all of the info. We're waiting :) :D
Dave

GMCJOE
12-20-2006, 01:14 AM
Take lots of notes and pictures. When will you be back to post all of the info. We're waiting :) :D
Dave




:exactly:

Please get as many pics and info as possible.
Thanks!

duramex
12-20-2006, 01:47 AM
That is waaaaaaaay cooooool! If you don't mind me asking, what kind of dineros did he have to give for it?Let us see the build sheet.:ro) :ro) :ro) :bow: :hail:

Dmax Tim
12-20-2006, 04:16 AM
That is waaaaaaaay cooooool! If you don't mind me asking, what kind of dineros did he have to give for it?Let us see the build sheet.:ro) :ro) :ro) :bow: :hail:

it's free, likely a test mule for GM so no $$ or a PEP vehicle.

dls64chev
12-20-2006, 09:30 AM
That is waaaaaaaay cooooool! If you don't mind me asking, what kind of dineros did he have to give for it?Let us see the build sheet.:ro) :ro) :ro) :bow: :hail:

Company test vehicle that GM wanted some miles on. Will never be sold to the public. Brother is a test engineer for the General and he will be listening for squeaks and rattles while i'm at the helm. So to your question
$0.

dls64chev
12-20-2006, 09:36 AM
I am very anxious about this, not only do we get to go tear up the sand on the dirt bikes. We have a brand new dirty to take us there. If this is a dream I dont want to wake up. :D

dls64chev
12-20-2006, 09:38 AM
Also, I can take pics but have no way of posting them on this sight. I would be glad to send them to any one who can though. I should be back on the 2nd or 3rd of January, depends how long we decide to ride.

dls64chev
12-20-2006, 10:16 AM
Dont suppose there is any way of knowing whether my PPE tuner would work on there or not. I suppose stock will do with just two bikes and gear.

Vege-Taco
12-20-2006, 11:15 AM
Also, I can take pics but have no way of posting them on this sight. I would be glad to send them to any one who can though. I should be back on the 2nd or 3rd of January, depends how long we decide to ride.

Send 'em my way, I'll host them on my site and link to them.

duramex
12-20-2006, 04:00 PM
sorry my stupid.I thunked it was a normal people truck purchase:damnit1: :banghead: :drinking: :duh: :idiot: :Pshyco: :sleep: :smashfrea :Wedgie: :whip:

WilliamBos
12-21-2006, 07:47 PM
You Lucky Bastard!!

dls64chev
12-22-2006, 12:35 PM
You Lucky Bastard!!

Thats putting it lightly. Brother just called me again today and he has posetion of the beast. Said it has a weird options package though. Leather seats and a six disc changer with steel wheels. Oh well, I still drive it.

GMC2500HD
12-22-2006, 01:08 PM
Please post the pictures so we can see it..

GMCJOE
12-22-2006, 02:13 PM
Please post the pictures so we can see it..



:exactly:

buildingup
12-22-2006, 03:13 PM
From Michigan to Cali right through the mountains should break her in right. Oh well, its going to the crusher anyways.


Can i come :D would love to go to glamis lol

jww2124
12-23-2006, 11:37 AM
jump the choachella canal with it, robby gordon style!

Quick Storm
12-26-2006, 04:23 PM
get some pics please!

dls64chev
01-01-2007, 09:50 PM
I'm back, and she was one hell of a nice ride. It was a 3500hd by the way as you will see in the pics hopefully tomorrow. Everything was quite nice and only had a few small things I didnt like. Will give you more details and pics when I get to work tomorrow.

dls64chev
01-01-2007, 09:56 PM
Please post the pictures so we can see it..

Are you doubting me, all well you'll have your pics tomorrow hopfully.

RayMich
01-01-2007, 11:21 PM
I'm back, and she was one hell of a nice ride. It was a 3500hd by the way as you will see in the pics hopefully tomorrow. Everything was quite nice and only had a few small things I didnt like. Will give you more details and pics when I get to work tomorrow.Was it a 3500 SRW or was it a Dualley?

GMC2500HD
01-02-2007, 12:32 AM
Did not say I was doubting you, just wanted to see pics that's all.

GMCJOE
01-02-2007, 01:44 AM
Are you doubting me, all well you'll have your pics tomorrow hopfully.




Sweet! Cant wait to see em!

:bounce:

dls64chev
01-02-2007, 12:05 PM
was it a 3500 srw or was it a dualley? srw

Well it was and interesting trip to say the least. But the truck was for the most part, awesome. This was the most powerful truck stock I have ever driven from the general. We went through Missouri and Flagstaff Arizona and the truck pulled 6th gear up 6% grades like nothing. Never required a down shift the entire way when pulling a hill, in fact it would actually accelerate a mph or 2 if you porked her enough. Granted we had no trailer but with our bikes, gear and food we were toating an extra 1000 lbs.

Have pics sent to another member here so hopefully they will be posted before too long.

dls64chev
01-02-2007, 12:41 PM
Goods

Truck was very smooth and powerful

New interior was nice for the most part. Radio and features are very nice along with the new steering wheel controls which seem alot easier to use. Radio also has a spot to directly plug in an Ipod or any audio input device eliminating the need for a fm modulator. The trans temp is a digital guage that can only be acessed through the DIC, has no seperate gauge now. Fuel info is very nice an accurate. Has trip, odometer, ave fuel econ, and fuel range. Fuel mileage was not what we hoped averaging anywhere from 14 to 18 with a trip average of about 16mpg.

Truck is unbelieveablly quite, with absolutely no diesel rattle or turbo noise when cruising down the road. The ride is far superior to my 06 on and off road. The woops in the sand were no problem where my 06 would have been bottoming out. Seemed very good in the snow and ice storm we ran into on the way home through New Mexico and Texas. Had over a foot of snow in spots in New Mexico. Took over 45 hours to get home but we made it.

Tailgate also has a torsion lift assist which makes it easier to lift the tailgate. Few other small changes but not really worth mentioning.

Bads

They got rid of upper heat vents in the extended cab portion of the truck and went with only floor vents like a furd which makes for a cold ride in the back seat.

Deep box makes it harder to load stuff in and out of.

Same old wheels, wish they could have came up with some new wheels for the completely redesigned truck.

Fuel mileage could have been better and probably would have been if we had kept it below 75 or 80mph.


All in all the truck was very nice and did everything we asked of if it in stride. The looks still have a little bit of growing to do but was happy with most everything else. I'll be ready for one in about 3 years.

dls64chev
01-02-2007, 12:43 PM
Any other ?s I'll be happy to answer.

Rockin
01-02-2007, 01:23 PM
How about the new diesel emissions stuff? Could you tell when it cycled?
Too bad you couldn't load it. I'm looking for a new truck and am leery of the LMM. I don't care about drag racing etc, just towing ability/efficiency.
Did you have any trouble finding ULSD?

GMCJOE
01-02-2007, 02:06 PM
Have pics sent to another member here so hopefully they will be posted before too long.



dls64chev,
You can send me the pictures and Ill post them right away for everyone to see.

dls64chev
01-02-2007, 02:39 PM
dls64chev,
You can send me the pictures and Ill post them right away for everyone to see.

I pm'd ya, pm me your email address and I will send them to ya as soon as possible. I'm at work so it may take a few minutes.

Vege-Taco
01-02-2007, 03:31 PM
http://sonnentag.net/temp/LMM/LMM-Badge.jpg
http://sonnentag.net/temp/LMM/LMM-Hood.jpg
http://sonnentag.net/temp/LMM/LMM-Grill.jpg
http://sonnentag.net/temp/LMM/LMM-Rear.jpg
http://sonnentag.net/temp/LMM/LMM-Rear-Seating.jpg
http://sonnentag.net/temp/LMM/LMM-Switches.jpg
http://sonnentag.net/temp/LMM/LMM-Gauges.jpg
http://sonnentag.net/temp/LMM/LMM-Exhaust-Tip.jpg

Particulate Filter and Lines
http://sonnentag.net/temp/LMM/LMM-Particulate-Filter-and-Lines.jpg

Coolant Tank
http://sonnentag.net/temp/LMM/LMM-Coolant-Tank.jpg

blizzardplowman
01-02-2007, 03:49 PM
Just me or is there no trans temp? I see fuel, oil, tach, speedo, volt, water....
Not sure if I like the round knob thing, much easier to push a botton with gloves than turn a knob.....Do like the new hood!

nextlevel38
01-02-2007, 04:01 PM
any pics of the entire truck??:)

stevebos
01-02-2007, 04:03 PM
The trans temp is a digital guage that can only be acessed through the DIC, has no seperate gauge now.

:)

dls64chev
01-02-2007, 04:06 PM
Agreed with the push button, and no there is no trans temp outside of the digital display of it in the DIC.

Montana Mike
01-02-2007, 04:10 PM
dls64chev, In your trip could you tell if the new smog stuff hurt the performance of the Duramax in any way or is everybody worried for nothing. And thanks for the Pics. Mike

Vege-Taco
01-02-2007, 04:16 PM
I lightened up the front grill/hood shot to reveal a little more hood detail:

http://sonnentag.net/temp/LMM/LMM-Grill-2.jpg

dls64chev
01-02-2007, 04:16 PM
Not really any performance hindering, however the engine did set a code that my brother just called and informed me was from excessive regeneration of particulate filter. We could not always find ultra low sulfer diesel and this was the result. Tech said that could have been the reason for poor fuel mileage. But as far as power it was not lacking at all. Turbo lag seems almost non existant and truck accelerates like a gasser on the freeway.

Shawn didnt even notice your location, we drove right threw yuma on our way to Glamis.

Sorry the pics weren't better but it will give you some idea of what they will look like. Trucks should be out in a month or so anyway.

Vege-Taco
01-02-2007, 04:23 PM
Shawn didnt even notice your location, we drove right threw yuma on our way to Glamis.

:D You and about 250,000 other people. :lol: The dunes sure were busy over the holiday weekend. It's fun to see all the nice rigs that pass through this area during duning season. It would have been fun to see the truck in person.

Montana Mike
01-02-2007, 04:27 PM
dls64chev, Thanks for the information, I'm glad I waited for the new trucks :D Mike

MaxumDuramax
01-02-2007, 04:49 PM
Is there the same diesel smell? How about smoke?

crashpilot
01-02-2007, 06:58 PM
That Chevy pickup looks pretty Ford Super Duty-ish to me. :wtf:

Thanks for the pics!!

btfarm
01-02-2007, 08:29 PM
Not doing anything for me... Already bought the wife her Tahoe. It's got alot of similar details like the trans temp gauge that SHOULD be available at a glance when doing HD work! Selector knobs not so good like Plowman said. And where's the tach redline?

I LOVE my '06 GMC even more now...

floriduramax1
01-02-2007, 08:41 PM
I like the new raised lettering. My buddy has the 07 Avalanche Z-71 and I like it's raised letter/number combo. Is it me or do the mirrors look level?

SAYWHAT
01-02-2007, 09:45 PM
Hope they did not raise the bed rail height like they did on the half tons,getting awful high for towing fifth-wheel trailers.The GMC half-tons come with a really nice looking set of rims, too bad the old rims are still lurking on the 2500HD.The tran temp gauge only in the DIC sounds just stupid.Maybe they will have things better configured by 08.Seen the 1500 at dealership,liked what I saw.

DURAtotheMAX
01-02-2007, 09:48 PM
the mirrors are level. Finally :D

thats awesome you got to drive a -900. Any other pics of the engine? Did you get a chance to read out the ECM file with EFILive? :D

GMCTRUCK
01-02-2007, 11:14 PM
You guys must have been like celebrities driving around in that thing.

duramaximizer
01-03-2007, 12:02 AM
holy cow...... that thing has a huge air intake from the factory. Wow. and the coolant tank. geez.

hemisareslow
01-03-2007, 02:12 AM
I like the way the new interior looks.....but i do agree that a trans temp gauge should be only a glance away....i guess its a good thing for tripple gauge pods...

RoadShark
01-03-2007, 02:59 AM
Thanks for getting the pics posted - nothing beats real life photos! That front view of the new Chevy is the best I've seen so far, and it actually looks great, as hideous as it's elephant ear bumpers have been known to look in other photos, in this picture it don't look half bad. So I can imagine how great the new GMC HD's will look in real life pics! Imagine that huge grill filling up a little econo car's rearview mirror :cool:

Sad to read that the turbo wine is gone on these new ones. That's one of the big things I've been looking forward to when I get a diesel. They've already made the diesels a lot quieter, I'd think that'd be enough. I realize they want them to appeal to the average gas truck person, but I think enough is enough. If it's going to be turned into gasser clone, might as well save $8K and actually get a gasser if you're not going to tow. Atleast on the LBZ trucks the exhaust can be reworked, but on the LMM's - the DPF is also the muffler. We'd have to wait probably for aftermarket DPF's. And not enough fuel stations with enough ULSD, so the DPF gets clogged up fast? And 5mpg less than a LBZ? Not to mention the higher price tag. Lift kits won't be avail for awhile (I'm absolutely tired of the stock look of my '05 gasser), and I'd have to wait to install a big azz aux fuel tank (100 Gal Transfer Flow). I don't know, maybe it is a little too early to get one of these right now, I might just go with plan B afterall and get an LBZ for a couple years. Or, umm...maybe even plan C - an F-350 SD PSD - I'd have styling similar to the new GMC HD's without the DPF, a SFA, which I'll probably never get on a GM truck smaller than a 4500 ever again, an option for BFG tires (why can't GM do that?), and an option that makes the truck sit even higher! But then, everyone says the 6L PSD is bad news.:banghead:

RayMich
01-03-2007, 03:18 AM
I would venture to say that someone working at the truck assembly line probably got a big fat $ugge$tion award for suggesting that the transmission temp gauge be removed from the cluster.:rolleyes:

For the most part, management sees temperature gauges as useless instruments that take up precious real estate in the IP cluster. They would rather use idiot lights to replace every gauge if they could. But the marketing groups keep pushing for gauges, so they put one in that is pretty much useless to satisfy the gearheads.

I suspect that the DIC is probably more accurate than the current analog temp gauges. The big problem is that unless you set it to constantly display transmission temperature, you may not know that your transmission is getting too hot until the alarm starts flashing across the display. Not a very good decison in my book.:(

GMCJOE
01-03-2007, 04:05 AM
the mirrors are level. Finally :D





Seriously...They Finally went level on the 07s. Looks much better that way too.



http://img522.imageshack.us/img522/6729/0720sierrahd10yz7.jpg (http://imageshack.us)
(Image has been resized. Click it for full size.)

BMGhauler
01-03-2007, 10:03 AM
Thanks for the reports and pics. You mentioned it rode better. Does it still have the TB front suspension? What makes it ride better?

buildingup
01-03-2007, 10:11 AM
Does your brother still have the truck or was it turned in already?

dls64chev
01-03-2007, 12:12 PM
Is there the same diesel smell? How about smoke?

Hardly any oder of any kind out of the tailpipe, nor was their any noise.
When I say no noise, I mean none. Kind of depressing.

kylant
01-03-2007, 12:14 PM
when you talk about the "mirrors being level," what do you mean?:confused:

dls64chev
01-03-2007, 12:21 PM
Thanks for the reports and pics. You mentioned it rode better. Does it still have the TB front suspension? What makes it ride better?

Yes it is still torsion bar front, but my brother said the suspension has been all revamped and from the feel of the ride I believe it.

Z71 Grizzly
01-03-2007, 12:31 PM
By looking at the dashboard pic of the headlight switch, Did you notice if it still has the dome override button. I loooovvveee having mine because I just don't like the light coming on every time the door opens.

dls64chev
01-03-2007, 12:35 PM
By looking at the dashboard pic of the headlight switch, Did you notice if it still has the dome override button. I loooovvveee having mine because I just don't like the light coming on every time the door opens.

Yes, there is a dome override button that is right in line with the fog light button and the cargo light. They are all stacked on top of each other.

moldman7
01-03-2007, 01:50 PM
That is one nice looking GMC, inside and out. I think some turbo whine and a little deisel sound would be better, but quiet is nice too.

MaxumDuramax
01-03-2007, 03:56 PM
Not me...I love to have as much Diesel knock and Turbo Whine asa possible. I guess it's the youth in me.

84jeepjohn
01-03-2007, 04:33 PM
That is one nice looking GMC, inside and out. I think some turbo whine and a little deisel sound would be better, but quiet is nice too.

FYI it's the Chevy not the GMC that he "test drove"

hdmax
01-03-2007, 06:30 PM
That Chevy pickup looks pretty Ford Super Duty-ish to me. :wtf:

Thanks for the pics!!

Are you smoking crack? If you said that about the new GMC, I would agree, but the Chevy looks nothing like a Ford.:rolleyes:

Antnee77
01-04-2007, 01:50 AM
Awesome truck. Thanks for the pics and review. I wonder exactly what they did with the front suspension for these new trucks. Anyone have the specs on the new 3500?

jollyrogr
01-04-2007, 07:11 AM
I'm also curious what you mean by the mirrors being level.

Overall doesnt sound too bad. More power and mileage isnt any different than my LLY

wbens
01-05-2007, 05:11 AM
If you look at the current trucks that have the towin mirrors on them, they slant up as they come off the truck. On the GMT-900s the mirrors are parallel with the ground.

Will

pknowles
01-05-2007, 11:44 AM
... And 5mpg less than a LBZ? Not to mention the higher price tag. ...

Just like the LBZ's you have to drive about 10k miles for the motor to break in before you know what the fuel milage really is. I'm sure this motor was brand new.

dls64chev
01-05-2007, 12:08 PM
Just like the LBZ's you have to drive about 10k miles for the motor to break in before you know what the fuel milage really is. I'm sure this motor was brand new.

Yeah, the truck had 200 miles when he picked it up and had something like 5600+ miles when we returned.

WilliamBos
01-05-2007, 02:58 PM
Hey,

Awesome pics. Where is the second battery? I like the gauge ayout, sorta reminds me of the 1973-1987 lay out.

I can't wait for the GMC to be released. I wanna go look at one!!



http://sonnentag.net/temp/LMM/LMM-Badge.jpg (http://sonnentag.net/temp/LMM/LMM-Badge.jpg)
(Image has been resized. Click it for full size.)

http://sonnentag.net/temp/LMM/LMM-Hood.jpg (http://sonnentag.net/temp/LMM/LMM-Hood.jpg)
(Image has been resized. Click it for full size.)

http://sonnentag.net/temp/LMM/LMM-Grill.jpg (http://sonnentag.net/temp/LMM/LMM-Grill.jpg)
(Image has been resized. Click it for full size.)

http://sonnentag.net/temp/LMM/LMM-Rear.jpg (http://sonnentag.net/temp/LMM/LMM-Rear.jpg)
(Image has been resized. Click it for full size.)

http://sonnentag.net/temp/LMM/LMM-Rear-Seating.jpg (http://sonnentag.net/temp/LMM/LMM-Rear-Seating.jpg)
(Image has been resized. Click it for full size.)

http://sonnentag.net/temp/LMM/LMM-Switches.jpg (http://sonnentag.net/temp/LMM/LMM-Switches.jpg)
(Image has been resized. Click it for full size.)

http://sonnentag.net/temp/LMM/LMM-Gauges.jpg (http://sonnentag.net/temp/LMM/LMM-Gauges.jpg)
(Image has been resized. Click it for full size.)

http://sonnentag.net/temp/LMM/LMM-Exhaust-Tip.jpg (http://sonnentag.net/temp/LMM/LMM-Exhaust-Tip.jpg)
(Image has been resized. Click it for full size.)


Particulate Filter and Lines
http://sonnentag.net/temp/LMM/LMM-Particulate-Filter-and-Lines.jpg (http://sonnentag.net/temp/LMM/LMM-Particulate-Filter-and-Lines.jpg)
(Image has been resized. Click it for full size.)


Coolant Tank
http://sonnentag.net/temp/LMM/LMM-Coolant-Tank.jpg (http://sonnentag.net/temp/LMM/LMM-Coolant-Tank.jpg)
(Image has been resized. Click it for full size.)

jdugie123
01-05-2007, 04:26 PM
truck looks good wish i could afford to get ride of my lly and buy a 07 and be the first to trick it all out i know i could get my bumpers for almost nothing i have already talked to the guy a buddy of mine is suppost to get a 1/2ton and wants replacement bumpers on it he said just bring it in and if they don't have one down yet then they will use his as a template and give like a 70% discount

RoadShark
01-05-2007, 10:58 PM
Just like the LBZ's you have to drive about 10k miles for the motor to break in before you know what the fuel milage really is. I'm sure this motor was brand new.

Good point! :)

duramax/a
01-05-2007, 11:24 PM
I didn't see tranny temp guage.

cipher0101
01-06-2007, 12:24 AM
The trans temp is a digital guage that can only be acessed through the DIC, has no seperate gauge now.

davefr
01-06-2007, 10:04 AM
GM is touting improved turbo response on the LMM.

1. Did you feel any difference vs. LBZ. Has throttle response caught up with the 8.1?

2. Did you notice any effects of the DPF system?

TIA

GMCTRUCK
01-06-2007, 12:17 PM
Do you have any pictures of the wheels? I want to see what the new 3500srw wheels will look like compared to the painted steel ones they currently have on them.

canadave
01-06-2007, 10:34 PM
Are those top post batteries?????? That would be a big switch for GM!!

dls64chev
01-08-2007, 12:04 PM
GM is touting improved turbo response on the LMM.

1. Did you feel any difference vs. LBZ. Has throttle response caught up with the 8.1?

2. Did you notice any effects of the DPF system?

TIA

Yes, the turbo response feels instant like a gas vehicle on the expressway.

Other than fuel mileage the DPF had no major effect on anything.

dls64chev
01-08-2007, 12:06 PM
Do you have any pictures of the wheels? I want to see what the new 3500srw wheels will look like compared to the painted steel ones they currently have on them.

All Hd wheels are exactly the same from what I've seen.

GMCJOE
01-08-2007, 01:32 PM
Yes, the turbo response feels instant like a gas vehicle on the expressway.

Other than fuel mileage the DPF had no major effect on anything.






:cool2: I guess that proves all those guys wrong about those particular complaints and speculations! :ro)


Thanks for all the great info on the new trucks dsl64chev!

GMCTRUCK
01-08-2007, 03:19 PM
:cool2: I guess that proves all those guys wrong about those particular complaints and speculations! :ro)


Thanks for all the great info on the new trucks dsl64chev!
Don't know yet about the GMs but, the newest version of Diesel Power magazine tested a new Dodge with the 6.7 and Particulate trap and they got horrible fuel mileage and check engine lights. They also mentioned the Diesel manual that came with the truck and basically the section on the particulate trap said if the trap needs to regenerate itself and your driving conditions don't allow you to comply with what the system requires the truck goes into limp mode till the dealer fixes it.

FLL Detailer
01-08-2007, 03:34 PM
http://img522.imageshack.us/img522/6729/0720sierrahd10yz7.jpg (http://imageshack.us)
(Image has been resized. Click it for full size.)

(Image has been resized. Click it for full size.)



Are the new cab lights LED's? The middle one looks like a thin LED strip. I tried to google to see if anyone makes any aftermarket LED cab lights but only found brake lights.

davefr
01-08-2007, 04:01 PM
Don't know yet about the GMs but, the newest version of Diesel Power magazine tested a new Dodge with the 6.7 and Particulate trap and they got horrible fuel mileage and check engine lights. They also mentioned the Diesel manual that came with the truck and basically the section on the particulate trap said if the trap needs to regenerate itself and your driving conditions don't allow you to comply with what the system requires the truck goes into limp mode till the dealer fixes it.


I can't see how the DPF system would effect MPG unless it's going thru regeneration mode and that's every 30,000 miles or so. In "normal" mode it's just a filter in the exhaust. There could be some additional backpressure but it should be negligable if designed correctly.

I think the lower MPG comes from ULSD which will effect all diesels.

Duramax also goes into limp mode if it needs to be regenerated but the driver ignores the request. I'm curious how many chances the driver gets before this happens??

luckymick
01-08-2007, 04:44 PM
Yeah, I don't get the whinning about the "14 to 18 mpg with a trip average of 16 mpg"? Sounds inline with my '06 LBZ. I pull right about 12.5k lbs once a month up Devore/Cajon pass and can't get over 10 mpg. My work driving - which is 60/40% hwy/city - avg between 14.5-16mpg. Considering this truck was not broken in, went through the Rocky Mountains (both ways), and probably was driven at higher hwy speeds, those gas figures would be what I would expect from a 7,000 lb truck.

Quick Storm
01-08-2007, 05:34 PM
back pressure is gooder for turbo vehicles

DURAtotheMAX
01-08-2007, 06:54 PM
but not too much........

the LLY+ VVT sucks for this. Drive pressure is upwards of double boost pressure.

GMCJOE
01-08-2007, 07:07 PM
I can't see how the DPF system would effect MPG unless it's going thru regeneration mode and that's every 30,000 miles or so. In "normal" mode it's just a filter in the exhaust. There could be some additional backpressure but it should be negligable if designed correctly.

I think the lower MPG comes from ULSD which will effect all diesels.




:exactly: :agreed:

Quick Storm
01-08-2007, 07:46 PM
but not too much........

the LLY+ VVT sucks for this. Drive pressure is upwards of double boost pressure.

what is VVT?

Colorado Kid
01-08-2007, 08:53 PM
VVT is variable vane turbo, and back pressure is good for gasoline turbocharged vehicles (not direct injection) where there is a possibility of the air/fuel charge blowing through the cumbustion chamber at low RPM without being compressed and burned. For Diesels (and direct injection gassers) more back pressure just means more effort wasted blowing the spent gasses out. The fuel is injected when the valves are closed (except when intentionally added late for emissions purposes, to providee raw fuel to the catalysts) so it can't "get away".

Quick Storm
01-08-2007, 11:42 PM
VVT is variable vane turbo, and back pressure is good for gasoline turbocharged vehicles (not direct injection) where there is a possibility of the air/fuel charge blowing through the cumbustion chamber at low RPM without being compressed and burned. For Diesels (and direct injection gassers) more back pressure just means more effort wasted blowing the spent gasses out. The fuel is injected when the valves are closed (except when intentionally added late for emissions purposes, to providee raw fuel to the catalysts) so it can't "get away".

thanks for the explaination, i forgot we were talking about diesels, now i'm going to have to learn about the diesel turbo technology. been aroung gassers my entire life and when i heard VVT, i thought toyota and variable valve tech.:p:

siduramaxde
01-09-2007, 11:54 AM
I think when the guys say the mirriors are level they really mean the mirrors are PLUMB.

TheGrouch
01-09-2007, 04:52 PM
Don't know yet about the GMs but, the newest version of Diesel Power magazine tested a new Dodge with the 6.7 and Particulate trap and they got horrible fuel mileage and check engine lights. They also mentioned the Diesel manual that came with the truck and basically the section on the particulate trap said if the trap needs to regenerate itself and your driving conditions don't allow you to comply with what the system requires the truck goes into limp mode till the dealer fixes it.

IIRC, that article mentioned that they could not find ULSD...thus the mileage/check engine predicament.

TheGrouch
01-09-2007, 11:29 PM
IIRC, that article mentioned that they could not find ULSD...thus the mileage/check engine predicament.

I stand corrected...the lack of ULSD was mentioned in a different piece. My bad. :o:

dls64chev
01-12-2007, 06:19 PM
Don't know yet about the GMs but, the newest version of Diesel Power magazine tested a new Dodge with the 6.7 and Particulate trap and they got horrible fuel mileage and check engine lights. They also mentioned the Diesel manual that came with the truck and basically the section on the particulate trap said if the trap needs to regenerate itself and your driving conditions don't allow you to comply with what the system requires the truck goes into limp mode till the dealer fixes it.

CEL light was on for a good portion of the trip on the way out to cali due to not being able to find Ultra low sulfer diesel all the time which caused the truck to regen more but never really hurt the engine performance. Fuel mileage was not great but it was far from horrible. Lowest it ever got was just under 15 and would get as good as 18 when the mountains were not present. Especially considering the regens take even more fuel and it was still yeilding decent mileage for a new engine.

dls64chev
01-12-2007, 06:20 PM
Are the new cab lights LED's? The middle one looks like a thin LED strip. I tried to google to see if anyone makes any aftermarket LED cab lights but only found brake lights.

Not sure there, it did have them but I did not check.

Skypalace
01-19-2007, 05:38 PM
All Hd wheels are exactly the same from what I've seen.

Nope, they're not. The LTZ package for the 2500HD for example includes
Wheels: 17 in x 7.5 in 8-Lug Bright Machined Alum (4)
Tires: LT265/75R17E AT BW (4)

versus even the LT2's base
Wheels: 16 in x 6.5 in 8-Lug Polished Forged Alum (4)
Tires: LT245/75R16E AS BW

but optional 17 inchers as above

and the base truck's
Wheels: 16 in x 6.5 in 8-Lug Painted Steel
and optional
Wheels: 16 in x 6.5 in 8-Lug Chrome-Styled Steel (4)

Antnee77
01-20-2007, 02:22 AM
Too bad they didn't go with the 70R17's

JhnZ71
01-20-2007, 05:08 PM
Whats with the wierd Exhaust tip?

RoadShark
01-20-2007, 05:36 PM
Whats with the wierd Exhaust tip?

It seems to be about cooling the extra hot exhaust that comes with a DPF regen - here's a thread covering it: http://www.dieselplace.com/forum/showthread.php?t=123241

RayMich
01-21-2007, 03:51 AM
Whats with the wierd Exhaust tip?

You can read more about it here:
http://www.dieselplace.com/forum/showpost.php?p=1513307&postcount=53

dmax07
01-28-2007, 12:42 AM
good job with those pics, how did you get to drive that beauty I thought gm had not built one yet it must have been the s---- driving it did you hear any turbo wistleling like the lbz?Yes, the turbo response feels instant like a gas vehicle on the expressway.

Other than fuel mileage the DPF had no major effect on anything.

RoadShark
01-28-2007, 01:13 AM
good job with those pics, how did you get to drive that beauty I thought gm had not built one yet it must have been the s---- driving it did you hear any turbo wistleling like the lbz?

A lot of posts to read through in this thread I know, but from memory, his brother is a test engineer for GM and taking it for a cross country test drive. And I think he said it was dead quiet - not even any turbo sound. :(
I wonder how the aftermarket will fix that considering most of the exhaust is supposed to be left alone, including the cooling tip. It's going to be interesting to see how that gets sorted, and I sure hope it does soon.

Antnee77
01-28-2007, 01:48 AM
I am sure that Banks will take care of that exhaust situation with some research and development.

racinmike77
01-28-2007, 01:59 AM
im sure joe smoe with his efi live can figure it out too.

dmax07
01-28-2007, 03:55 AM
keep me awake through my long drives to glamis but i guess i have to live with it I just hope the guys at banks and rbp do their homework soon Thanks for the info thouh loved my lbz not to much knocking but a great turbo singing with the rbp exaustIt's going to be boring without any turbo noise that's what A lot of posts to read through in this thread I know, but from memory, his brother is a test engineer for GM and taking it for a cross country test drive. And I think he said it was dead quiet - not even any turbo sound. :(
I wonder how the aftermarket will fix that considering most of the exhaust is supposed to be left alone, including the cooling tip. It's going to be interesting to see how that gets sorted, and I sure hope it does soon.

keham
01-28-2007, 03:27 PM
On that 3500 srw what was the trucks cvwr? or better yet the carge load rating, did you happen to look at that label on the door.

ken

dmax07
01-28-2007, 10:30 PM
What's up did you get any side pictures of that beast or does anybody have any side pictures of the chevy :rockit: Brother just called me from work to inform me of what our travel vehicle for Glamis California was. Seems he has scored a brand new GMT-900 extended cab LMM/ally. Looking forward to driving that baby. I'll let ya know how it was when I get back. :D

sundancekid
02-01-2007, 11:44 AM
So can the DPF be removed with a little computer tweaking or some other mod to prevent a CEL (i.e. LLY finger stick and EGR blocker)? Seems like the days of screaming straight pipes are over if not...