Seems that GM is catching onto tuning and warranties. Looks like they are only interested in the V8 platforms currently under warranty.

http://i823.photobucket.com/albums/z...MGT1/v8Gas.jpg
http://i823.photobucket.com/albums/z...GT1/v8Gas2.jpg
http://i823.photobucket.com/albums/z...GT1/v8Gas3.jpg
http://i823.photobucket.com/albums/z...GT1/v8Gas4.jpg
http://i823.photobucket.com/albums/z...GT1/v8Gas5.jpg
http://i823.photobucket.com/albums/z...GT1/v8Gas6.jpg


Found this over on the HPTuners forum.

I don't think it'* a good idea to modify the PCM on a car under warranty.

I agree. Any serious modifications to a vehicle should wait until after the warranty expires. Unless the dealer installs it for you.

once it'* out of warranty, GM couldn't care less if you assplode the engine or transmission all over the road.

My suggestion would be to get a second PCM, and tune that one. Then swap over for any work.

That'* one way to do it. Get a second PCM. But, it wouldn't surprise me if GM say'*, well, we are not going to warranty that because that'* not the original PCM that was installed at the factory. And because "we" did not replace the PCM, we are not going to honor your warranty.

That'* why you tune the 2nd PCM and leave the OEM totally stock.

Good point.