I just upgraded to 265/75/16 tires on my stock wheels on 04 Chev 2500HD (LLY engine). Does anyone live in the Phoenix area that has the programmer tool to adjust the computer for the new tire size? Everything else on the truck is stock, so have no need to buy one at this point.

Thanks for your consideration,

:) David

Next time you're by the dealership, they can bump it up to 265 if you don't get any results here. You may be outta luck though with the EFIlive folks because you'd have to lock a VIN license to your truck. I'm not sure about that; mine is supposed to get here tomorrow. Of course, for that same $99 for your own VIN licence, if you had a buddy with an EFIlive you could have a much, much more fun truck to drive.