if anyone should know it would be 02Denali since they built his tranny and charged him for parts they never installed. When the transmission grenaded all they wanted to do to compensate for not installing the parts they charged him for was to give him the parts? THAT'S JUST WRONG!!! If I had legal aid I would take them to court to get a full refund especially since it could have lead to the demise of the transmission they built for him. I would also ask they replace the transmission with one that was equal to the one that was in the truck prior to their service. SMALL CLAIMS COURT, the hero of the little man!!