[esox07]

There are dozens of threads on here where people with lift kits have gone in for warranty work and had the dealer blame the lift kit and refuse warranty service. Technically, the dealer/GM is suppose to be required to prove that it was the lift kit that caused the problem but that is not the way it works quite often. Then, it becomes you against the dealer and GM.

That being said, my dealer has a big ReadyLift display right in the service center. I asked the service tech about it and the truck warranty and they said it would not affect it. I pushed a little further and asked what would happen if GM denied the warranty claim blaming it on the lift kit. He said then Readylift would honor the repair. I asked him what would happen if Readylift then denied the claim and he said that one way or the other, it would get covered. If not by GM or Ready Lift, then the dealer would honor it. The kicker however was that it had to be installed by them.

Just my opinion, but you are risking your warranty if you install a lift. Either that, or be prepared to go the distance if you have a problem down the road. You will be going up against GM and all their lawyers though. I suppose you could talk to the dealer and ask ahead of time, but unless you get it in writing from him, which is highly unlikely, it is worthless if he tells you it wouldn't affect the warranty.

 

[esox07]

That is why I said, ask before you do it and if the dealer says it won't void your warranty, ask to have it put in writing. At that point, the answer may change. Otherwise, I agree, you put your warranty at risk.