New GMC 2500 Wont Engage Trailer Brakes
I have a new 2021 GMC 2500, Diesel. It will not engage trailer brakes unless the brake pedal is mashed to the floor. It is this way on any trailer it’s hooked up to. My 04 Silverado works fine on my t...
Forum Discussion
does the manual control activate the brakes? What is the setting on the brake controller?
On my 2015 Denali I have it set on 5 and activated brakes on both trailers, and I feel the trailer brakes when I check using the manual control slider.
On my 2015 Denali I have it set on 5 and activated brakes on both trailers, and I feel the trailer brakes when I check using the manual control slider.
