Originally Posted by jtgresley
Have a 2017 Pinnacle. For at least three summers have been getting an intermittent heat brake disconnect warning when pulling the trailer. Have had it in for service at least three times, with no success. They can’t find the problem because the warning is pretty sporadic. Have checked the truck’s brakes thoroughly, and am sure the problem is in the trailer. Does anybody have any experience with this issue, or any advice? Love the trailer, but am considering selling because we’d like to take some trips involving mountains, and want to have brakes that work 100% of the time!
My GM truck is very sensitive, it doesn't take much to make it display a fault. I get the warning occasionally, along with turn signals inop doing the trailer light test, but they still work.
Are your brakes REALLY disconnected when the warning displays? Have you manually applied the brakes with the controller to check operation when the disconnect warning displays?
Make sure your 7 way plug connectors on the truck and trailer are super shiny clean, also check trailer ground.