I only keep GMC until warranty runs out and they are gone! If warranty does not cover all i trade them!! I work the hell out of them and i am quite happy with the bottom line and the main thing i like is "cold weather starting with out block heater" when i am off the grid ... - 40F i have to cycle the glows 2 or 3 times but they always go!!!!!!! And the engine noise is excellent compared to the ford and dodge products... all i can offer!!!!!!!!!!!Oh I know the motor and trans are going to do what I need it to. My LMM pulls our 13k lb camper without issue, but I deleted the DPF and tuned out the EGR. I won't be planning to do that with a L5P and want to know if a higher mileage L5P is going to have a higher rate of regens with the DPF being full all the time or worse: complete DPF failure because it's too far gone to be regen'd. I guess I should already know that's likely not the case. My LMM had 240k miles on it when I deleted and tuned, and that was the first year production with the DPF.
P.S i have pulled a Cat IT 420 on float back into the bush roads and L5P did the job but needed 4x4 and low range .....16000 Ib plus trailer ... she will work....