How's the engine braking in these new pickups with 6 and 8 spd trannies compared to a manual? I haven't driven one in the mountains.
Not sure if you are referring to a diesel or gas? as others have said the diesel brake is very effective. My 2009 Chevy gasser has a 6 sp auto with a tow mode and that thing really downshifts hard,
Only so much a gas engine can do for braking with the relatively low compression and all. Overall I would say it is very effective.