After all injectors were replaced under warranty with my truck having only 45k miles; turns out now with 80k miles the injectors are failing again. My local dealer has said GM will not cover these repairs. I find it absolutely unacceptable that after an incremental 40k miles that I should spend $5000 dollars to have the dealer replace them. I have a letter that references over 33 different service tickets on my truck. I am asking those who read this who I should send my letter to at GM and all service ticket attachments. HELP !! read full review »