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
The engineer that redesigned the RAM IBC in 2015(maybe it was 2014) must have moved to GM. RAM had a good IBC however most users in around 2015 started complaining about these pulse width controllers verses older current varied ones. RAM's decreased braking as the vehicle slowed. I found running mine in Heavy Electric over hydraulic on my drum brake trailer worked better.
