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
If it works with the manual slide, then the brakes work and the controller. The issue seems to be the foot actuation dealing with applying the brakes on your truck. I wonder if that is controlled by a computer or by some actual physical connection. They might have to replace one of those items.
