All good points and while I do appreciate your trying to guess how I drive(I didn't tell you), none would explain why the squealers never hit the rotors, plus I've had never had this issue with any of the other gm trucks I've driven other than the 94 that had rear drums and that I got over 40k with. I do drive fast, there is no doubt about it but I have driven this way for over 35 years and have never had brakes go like this. I would expect a 2500 truck brakes to outlast a 1500 truck brakes with both being driven the same. My 2011 6.2 actually towed `16k weekly and I replaced the brakes once in 135000 miles. And the dealer actually put Napa pads on this the time before this last one to try something else. Still got 20k miles out of them. Thank you all for trying to help, I don't drive two footed and I really have no clue what to have done next.