My second week with new truck and the truck powered down 3 times with clean exaust filter message. Last dealer said a new bulletin was out and reflashed PCM. So far ok but this truck just does not pull the weight like my LLY did. I tow pretty heavy all the time(hot shot) and would like to dump the DPF and install aftermarket exhaust but kind of torn on a tuner or EFI live. Unlike most I am not interested in quarter mile times and racing, but balls out torque that my trans can live with. Reliability is key. This truck is not fun to drive the way it is. Any tune suggestions?

Efi or hp tuners is the only choice at this point for the dpf delete

The 05' LLY dually that I traded for sig truck couldn't hold a candle to this 07's towing capabilities. I towed 14,500# 5er with both the 05 & the 07 in the mountains of NC, SC, and TN and the 05 wasn't nearly as "strong" as the 07. Both trucks were/are stock.

My second week with new truck and the truck powered down 3 times with clean exaust filter message. Last dealer said a new bulletin was out and reflashed PCM. So far ok but this truck just does not pull the weight like my LLY did. I tow pretty heavy all the time(hot shot) and would like to dump the DPF and install aftermarket exhaust but kind of torn on a tuner or EFI live. Unlike most I am not interested in quarter mile times and racing, but balls out torque that my trans can live with. Reliability is key. This truck is not fun to drive the way it is. Any tune suggestions?
Just remember If you mess with the emissions on these trucks you can kiss your warranty good by. But if you want a truck you can depend on thats what you need to do. On my truck that has shut down four times and hauled in three times, has always been a direct results of the emissions. I also tow all the time, thats what I bought the truck for. Even though twice when it happened I was not towing. The big problem I have is the more this happens the less confidants I have with this rig. At this point I will not use this truck until the dealer tells me they got it fixed. And they will not say, its fixed. You can stop this bullshit from happening with after market products, but don't look to GM for any warranty issues. I was told by Customer Service if I used any tuner on this truck, and they could prove it my warranty was history. 47 days in the shop and counting. Good luck Bud I feel for you. Be very careful you do not know when it will happen again!

Just remember If you mess with the emissions on these trucks you can kiss your warranty good by. But if you want a truck you can depend on thats what you need to do. On my truck that has shut down four times and hauled in three times, has always been a direct results of the emissions. I also tow all the time, thats what I bought the truck for. Even though twice when it happened I was not towing. The big problem I have is the more this happens the less confidants I have with this rig. At this point I will not use this truck until the dealer tells me they got it fixed. And they will not say, its fixed. You can stop this bullshit from happening with after market products, but don't look to GM for any warranty issues. I was told by Customer Service if I used any tuner on this truck, and they could prove it my warranty was history. 47 days in the shop and counting. Good luck Bud I feel for you. Be very careful you do not know when it will happen again!


Throw the lemon law in their face and get a new truck!!!

yep and also like they said they have to prove ur mod caused the problem

yep and also like they said they have to prove ur mod caused the problem
x2 moss ferguson act.... the dealer has to prove the mod WAS the cause of the problem

It is called Magnuson-Moss Warranty Act

Should get the name right if your going to call the dealer on it.

http://en.wikipedia.org/wiki/Magnuson-Moss_Warranty_Act

Throw the lemon law in their face and get a new truck!!!
Yeah, no kidding. I believe it's something like 30 days in the shop or three separate times (two if it causes a safety problem which stalling would)

This is the real world we are living in, and in the real world GM can void your warranty in a heart beat for anything including having dirty wheels if they want to, Now it's up to you to get a lawer and fight it. Of course you could easly buy a new truck for that price and they know it. I was in that place just a month ago. They said get a lawer and sue us, just not in so many words.

Naw, not that difficult. My Superbike rider lemon-law'ed an '05 2500. On his own, with no money out of pocket. The law (at least here in Ca.) is written pretty plainly as far as what qualifies. GM can dispute it if they want to, and then it goes to arbitration. The customer simply needs to show that the vehicle qualifies, and then it's over. In the case of my rider, GM didn't even fight it. They have a "Lemon Law" department, and they took over. Told him it would take "X" amount of time to get a check cut, and feel free to drive the vehicle around until they get it done. They deducted for the amount of time he was able to drive the truck around problem free, which ended up being five-hundred-and-something $$, and that was that.
I'm about a knat's ass away from doing the same on my Wife's POS LR3.

This is the real world we are living in, and in the real world GM can void your warranty in a heart beat for anything including having dirty wheels if they want to, Now it's up to you to get a lawer and fight it. Of course you could easly buy a new truck for that price and they know it. I was in that place just a month ago. They said get a lawer and sue us, just not in so many words.
What I'm trying to figure out is how far Gm was going to take this. You would think at some point they would just through the towel in, but not in this case. I was also surprised that they, GM where blaming the mods on this truck for the problems. The mods where done at there authorized installer. They sell this very truck, with mods added onto the window sticker, every day at the dealer I purchased it from. Oh yeah we're going after the lemon now, but why in the hell do you have to go through all this crap to get there attention. You watch as soon as they get there letter letting them know that I'm suing there ass they'll call with some kind of offer.

You watch as soon as they get there letter letting them know that I'm suing there ass they'll call with some kind of offer.

You do know that you have to go through the procedure for resolution in your owner's manual, right? That means arbitration through the BBB...

How do I know? I did this very thing back in May when my 06 computer /electrical system fried and the dealer couldn't fix it. I was successful in getting an '08 for a replacement, but it wasn't easy and it wasn't much fun.

Sending GM a letter saying you intend to sue won't get what you want. START THE BBB RESOLUTION PROCESS NOW! (Plus it's free - no lawyer involved)

I mean I love the truck but damn, when I go into a headwind the truck "hunts" between 4th and 5th gear. LLy never did that stock. Mileage is sh*t.
Even the temp has spiked into a headwind going to 230. WTF?

You do know that you have to go through the procedure for resolution in your owner's manual, right? That means arbitration through the BBB...

How do I know? I did this very thing back in May when my 06 computer /electrical system fried and the dealer couldn't fix it. I was successful in getting an '08 for a replacement, but it wasn't easy and it wasn't much fun.

Sending GM a letter saying you intend to sue won't get what you want. START THE BBB RESOLUTION PROCESS NOW! (Plus it's free - no lawyer involved)
I wish I had the time to cross the "T's" and dot the "I's" with these people, but I myself have run out of patients even talking to these people. I hate turning things over to an attorney but there is more to this than just a truck that has been in there possession for more than forty days total now. I have lost numerous days of work because of this truck. I understand there are certain procedures that have to be followed here. My concerns are the $8000.00 plus in extras on the truck, all the lost time and listening to all there bull so they can just buy more time. I myself am absolutely astounded at how this has been handled by GM. What a run around. Surely I must be the asshole here thinking that between the dealer that I purchased the truck from, and the dealer that the truck is at now would, in conjunction with customer service, warrant a buy back on this truck. If I were to call on the truck rite now I guarantee they would tell me they need more time. The excuses are mind boggling, I think there reading them from a book. Haven't herd the one "my grandmother died" yet, though I'm sure it's coming up soon. Anyway I have hired a firm to take it from here. I am to have no more contact with them, and them with me.

That sucks! I hope they at the very least make it right for you. We pay too much money for these trucks to get treated like that.

Hate to see this happening to you or anybody . Glad you wrote about it though so some of us Truck shoppers know what we could possibly get into .

I noticed that the times that I've seen the "clean DPF filter" message I was towing. And since that, the truck seems to be down on power. Just feels restricted/bogged down at times. There is only 4300 miles on the odometer but I'm thinking that filter is getting clogged. I'm thinking about taking the DPF off and going with a program that will kill the codes so my remote start will work (don't want to give that up). Should be good after that.

Removed my filter today.. Just can't get myself to appreciate the whole dpf thing. ):h

I noticed that the times that I've seen the "clean DPF filter" message I was towing. And since that, the truck seems to be down on power. Just feels restricted/bogged down at times. There is only 4300 miles on the odometer but I'm thinking that filter is getting clogged. I'm thinking about taking the DPF off and going with a program that will kill the codes so my remote start will work (don't want to give that up). Should be good after that.
I myself would take it to the dealer and have them force the clean DPF filter mode. And then see if that improves your power level.

At this point, I think I have decided that the DPF is coming off. Bye-bye DPF, liked you for awhile but it's time to go! It becomes very stressful towing 10,000lbs 200 miles from home and wondering if your going to get stuck on the side of the road.

This issue seems to be widespread. I read alot of posts from people that are having issues with the DPF needing to be cleaned so it seems like the regular regen isn't taking care of that. GM should notice this at some point and work on the issue.

At this point, I think I have decided that the DPF is coming off. Bye-bye DPF, liked you for awhile but it's time to go! It becomes very stressful towing 10,000lbs 200 miles from home and wondering if your going to get stuck on the side of the road.

This issue seems to be widespread. I read alot of posts from people that are having issues with the DPF needing to be cleaned so it seems like the regular regen isn't taking care of that. GM should notice this at some point and work on the issue.
I think there burning the midnight oil on this one. Just go to the dealer and strike me dead if they do not have a new down load for you.

I was just reading an article in the November issue of Diesel Power. There was an '07 6.7L Cimmins dynoed at an event. The truck made about 200hp and 350 ft-lb at the rear wheels. They said it was because the DPF was plugged up. Also showed a picture of a meter that side Catalyst Stat - 100%. Sounds like GM owners aren't the only ones with DPF problems.

I noticed that the times that I've seen the "clean DPF filter" message I was towing. And since that, the truck seems to be down on power. Just feels restricted/bogged down at times. There is only 4300 miles on the odometer but I'm thinking that filter is getting clogged. I'm thinking about taking the DPF off and going with a program that will kill the codes so my remote start will work (don't want to give that up). Should be good after that.
What fuel have you been running ?

LSD or ULSD ?

This is the real world we are living in, and in the real world GM can void your warranty in a heart beat for anything including having dirty wheels if they want to, Now it's up to you to get a lawer and fight it. Of course you could easly buy a new truck for that price and they know it. I was in that place just a month ago. They said get a lawer and sue us, just not in so many words.

It depends on the state you're in. In some instances the company can get stuck with additional punitive fees that are HUGE - and that's in addition to paying 125% of what the customer paid for the vehicle. If there is a sound basis for the lemon law return, it's worth looking at it hard.

You're not powerless... I remember a guy taking his new truck and putting large lemons all over it. He also had a HUGE sign on top, like a placard, that had a 36" long lemon on it. Anybody who got close to the rig could read about the LONG list of crap that went wrong with the truck and the poor customer service. That thing showed up next to the dealer, at the sportsman's shows, at the fair, etc. I think he got his pound of flesh from the manufacturer before they caved in and did the right thing.

The dealers that I have spoken to don't even want to do forced regens because of fire liability. I mean, I was told several times that, we have to charge you for this service because warranty does not cover this. As a former tech, I understand what they are saying; but, as a new owner with 3000 miles on a truck that I have had for a month kind of gripes my ass. I literally was told take it or leave it. Meaning pay for the regen or leave with a truck at limited power. ***** YOU. You leave my ass stranded 1000 miles from home because of some flat rate issues! WTF is that. Telling me don't idle the truck for more than 10 minutes. Man, my ass is all over the united states. It's a WORK truck you know. Yeah, they say, I realize it's 30 below but you can't keep the heat going cuz you might clog your DPF. This sh*t is nuts.

they should not be charging for forced regens

The dealers that I have spoken to don't even want to do forced regens because of fire liability. I mean, I was told several times that, we have to charge you for this service because warranty does not cover this. As a former tech, I understand what they are saying; but, as a new owner with 3000 miles on a truck that I have had for a month kind of gripes my ass. I literally was told take it or leave it. Meaning pay for the regen or leave with a truck at limited power. ***** YOU. You leave my ass stranded 1000 miles from home because of some flat rate issues! WTF is that. Telling me don't idle the truck for more than 10 minutes. Man, my ass is all over the united states. It's a WORK truck you know. Yeah, they say, I realize it's 30 below but you can't keep the heat going cuz you might clog your DPF. This sh*t is nuts.
Hey davey you driven my truck? I feel for you and your frustrations. Is your truck bone stock? I don't know how you feel about programmers but it might be an option for you. I myself am a very bullheaded old bastard. I know that I could take this truck, ripe the DPF off, reprogram it, and it would probably perform as good or even better than my LBZ. That to me is not an option. I buy new vehicles for there warranty, plain and simple. When I am on the road and my wife has a problem with her car she takes it to the dealer, they give her something to drive and fix it. The same for my 17 yr old son. This is a Major problem that GM is having with these trucks. It is not isolated to GM buy no means. But I value Warranty and customer service. Putting the blame on modification on my truck as the problem is just a plain stupid remark. Some people think this is not a wide spread problem, That is not the case.

they should not be charging for forced regens
He's right no charge for regens. Right now this is the only real fix they have is to regen. Sounds like he's refusing you service not good for him.

Yeah, the truck is bone stock. I am going to wait on the sidelines a little before I get a programmer and see what plays out. This truck is a dog right now.

davey: It's just an issue with warranty. Sounds like you get around the road a little bit. You might not always be able to get to your selling dealer. By what I have been reading that might not be such a bad thing. But if you decide to eliminate the DPF, totally on who you talk to it might become an issue. If you want solid ground to stand on keep it stock and make them fix it or buy it back. If this issue with the emission on these trucks become a huge expense for GM, which I know already has. They will look for things to cut there losses. Things that give them the edge in a court of law. They are meeting the emission standards that they have to and trying to program the truck to live with it. We on the other hand are modifying the emissions so the trucks are non compliant but better fit our needs and in reality in my opinion are safer and more user friendly trucks. GM, Ford, and Chrysler have to build diesel trucks that anyone can use, City, or open road. My trucks have got to do it all. Good luck what ever you decide.

I don`t understand all the problems with the new trucks emissions. All three brands are having this same problem.Lease some new trucks to good customers a year before they are released & we will find the weak links. Then they have lots of time to come up with a fix. Also you would think that the gov`t would let them have some software fix to keep us running until they figure this out. I know they test these trucks alot before release so why didn`t they find this problem sooner? This may be too simple but I feel for the guy who buys a 40,000 truck to work out of & it lets him down.

I don`t understand all the problems with the new trucks emissions. All three brands are having this same problem.Lease some new trucks to good customers a year before they are released & we will find the weak links. Then they have lots of time to come up with a fix. Also you would think that the gov`t would let them have some software fix to keep us running until they figure this out. I know they test these trucks alot before release so why didn`t they find this problem sooner? This may be too simple but I feel for the guy who buys a 40,000 truck to work out of & it lets him down.
I got to tell you the best testing in the world is the public. My father worked for Fords at the proving grounds in Romeo Mich. They would put 300,000 miles on cars and trucks, trying to create the publics driving habits. And after years of proving there vehicles on and off the roads,the good ole general public would always find those things that were over looked.

I know what you guys are saying about leaving it stock but I put 10k a month on the truck sometimes and I don't have time to **** around with leaving the truck tied up in a shop or with litigation. The truck has not given me a problem since last reflash.

I towed with mine for the first time after pulling off the DPF. Sooo much better! The motor didn't feel like it was being choked, plenty of power and it didn't have to work hard to pull my 10,000lb+ trailer.

What a bitch when you feel like your getting pushed into a corner. The only thing you can do to some of these trucks to make them perform is to rid it of the emissions and reprogram. I fully understand the litigation, down time, and having to have the truck to work with. But at some point you got to do what a man's got to do. It's pretty obvious that not all these trucks are the same. To many perform differently, it has to be driving style. The last time my truck was at the dealer it was there for over 30 days. Now it sits in my driveway. I don't drive it, but for someone like you that has NO choice. I think I would rip the emissions and make a good safe driver out of it. But it's time and money, just isn't right.

Have you spoken to the service manager? I'd speak to him, get his name and then call GM and speak to a rep and say that at XYZ dealership, the service manager __________ has denied doing warranty work on your brand new 2008 truck, which has no aftermarket parts on it. See if you can get GM to get something done.