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gat75's avatar
gat75
Explorer
Jun 30, 2013

Will tow/haul & manual shift stop GMC 2500 & 5th Wheel?

My Wife & I am planning on taking a 6000+ mi trip this fall, we will be going to Yellowstone, Redwood Nat Park, Yosemite and G Canyon. I was told by a friend that did this same trip that I should look...
Tow Vehicles
downtheroad's avatar
downtheroad
Explorer
Jun 30, 2013
Tow Haul Grade Braking is an awesome feature of the Allison. It will work just fine for you. You don't need to add an exhaust brake.

Just don't be alarmed when the engine screams a little and the RPM's jump UP when Grade Brake engages.

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