|
Don,
Welcome to the MOC!!!
I can only speak from my experience with my Duramax and Allison. My experience tells me the answer to your question is, no you do not need an exhaust brake. The Duramax and Allison has built in grade braking which will allow you to use the motor to slow you down. And now on the 06 and 07 GM's you get "manual mode" shifting, which will allow you to select the proper gear right on your gear shifter. My coach loaded is around 13,600 lbs and a CGVWR of a tad shy of 21,300 lbs. I have towed many mountain pass' and so far, I have found the trick is to start to downward side at a nice slow speed and in a lower gear. If you plan ahead for the grade down, the Duramax and Allison will do all the work for you. Enjoy your new Silverado and Montana.
|
Hybrid Mode
