The dealership is telling me that my DPF is cracked, and the sensors are melted??? I've been reading that the overhead tells you when the engine goes into regen. I have 23k on it and a couple of weeks ago I took it in for engine light. Dealer reflashed now I get more info lights at start up than before. Also for the first time I got a ding and DPF 100% refer to owners manual. I drove for 3 hours at hwy speeds getting to my destination after the warning. Never said regen, just stayed at 100% then lost 1/2 power started bucking and died. I think the truck has never done a regen and clogged the DPF which made it hot enough to melt the sensors, and crack the DPF. Anyone else have similar problems or thoughts?