From what I can tell most pickups with diesel engines do not come with exhaust brakes on them, except, I believe, for the latest iteration of the 6.7 Cummins. For those of you who have diesels, do ...
I sure like mine all though I guess it is a turbo brake or something. It sure works good. Just camp back from a trip with lots of ups and downs and even with just my TC on it was very nice. Up to 8 percent grades the tow haul, cruise control and exhaust brakes did all the work.