Technically the warranty can be voided when installing any aftermarket programmer. However, the average dealer usually can't tell if theres been a tuner installed if its been properly removed and "returned to stock". The RaceME, RaceME Pro & RaceME Ultra can all be easily be removed without the dealer being the wiser. Most dealers know (or should know) that the emission regulations for 2007.5+ newer diesel pickup trucks has caused nothing but problems. The best solution to prevent further issues is to delete all the emission components. If your in need of warranty work; shop around for a dealer willing to work on a "deleted" truck.