I have an 08 chevy Duramax. Will it void the warranty changing the exhaust? I had a Dodge and they didn't void it. But this Chevy has the DPF?

There's really no definitive answer on that question. Kinda all depends on each dealer's service dept.

:welcome:

As Arkapigdiesel said, it really all depends on the dealership. If you know the guys, and have a good relationship with the service department, chances are you're fine. I went as far as to ask my service advisor and the service manager. They both assured me that they would do nothing negative to my warranty. On the other side of that, if you find a way to piss them off, they do have the option to say no.

The only reason they have more power over that with the new LMM is because you have to use a programmer of some sort to dump the codes that will show up with the DPF missing. According to GM, exhausts and programmers are nono's...but lots of people are running them. :)

So, all in all, it's a crapshoot. :) Happy Easter!

As Arkapigdiesel said, it really all depends on the dealership. If you know the guys, and have a good relationship with the service department, chances are you're fine. I went as far as to ask my service advisor and the service manager. They both assured me that they would do nothing negative to my warranty. On the other side of that, if you find a way to piss them off, they do have the option to say no.

The only reason they have more power over that with the new LMM is because you have to use a programmer of some sort to dump the codes that will show up with the DPF missing. According to GM, exhausts and programmers are nono's...but lots of people are running them. :)

So, all in all, it's a crapshoot. :) Happy Easter!


This is all well and good, as long as you always have waranty work done at that dealer, but what about when you are on the road? I wish there was a definitive answer; even the owners manual says is various places "you may void the waranty" if you make certain modifications. If you make the mods, you may be fine for the entire 5yr/100k waranty. On the other hand they could deny a waranty claim if you modify the truck. You could prevail after a long battle, so in the end you have to decide if it is worth it. Good luck.

is there a programmer i could add and leave the dpf on there that will not clog it.

Keep in mind that 5yr/100000mi is on powertrain only, which is where most of the high $ repairs usually occur. My $.02 is that if you make it past the traditional 3/36 without any major issues, you are probably going to be okay and I would probably be able to make basic mods, such as exhaust, without losing any sleep even though I still had another 2yrs or 60 some odd thousand miles left.

All my previous GM vehicles only had warranty related claims within the first 20k miles, if at all. For me I have an '06 so I only have the 100K warranty on the Dmax and 3/36 on everything else. If I make it through 36k without any issues, then I will start my mods to engine/performance.

As all have said, it is between you and the service dept and has to do with your level of risk tolerance. Good luck

yeah, ive been wondering the same thing myself. I have to find a new dealership to take my truck to now being that the one in my town has closed down. Getting to the point i would love to take off the cat and dpf straight piping the entire exhaust and installing a programmer not as much for the power but to bypass the dpf. I just cant justify loosing a 5yr 100,000 mile warranty on my $50,000. truck. Gm needs to have a definate answer on the issuse and it not be in the hands of whether im in good with the dealerships service guys or not.

I think GM has a definite answer. It would be against the law to remove items that are required to meet the federal emissions. General Motors has to follow these rules and regulations. Now where a dealer may have a little "wiggle room" with some warranty items, this will be extremely risky with anything emissions related, because of big fines. Kind of like asking an exhaust shop to remove your catalytic converter. Also now with the ECM keeping track of things it will be hard for a dealer to tell GM a different story. I wish it was different, because I have an '08 that I wish got better mileage. Good luck with your choice.

i have aftermarket 7 inch stacks on my 08 gmc 3500 dually with the dpf in tack, had warrenty work done had NO problems i guess it depends on the dealer

banks power has dpf friendly tunes that are actually less harmful than the stock tune. somebody has a dpf switch that routs the exhaust around the dpf at the touch of a button.

Emissions Who Gives A S@#t About Emissions. We Care About Mpg, This Manufacturies Put So Much Emissions B/s On This Engines That They Kill Mpg,i Removed All Of The Emission B/s On My 2008 3500hd 4x4 Dually Dpf,catalac Converter, Egr Crap I Get Belive It Or Not I Get 24.5 Mpg At 65mph Towing Nothing F@#k The Epa And There Laws I Care About Mpg

So I Guess Aftermarket Wheels Will Void Warrenty To Hah?