Chevrolet Repair Questions? Ask a Chevy Mechanic for Answers ASAP
Hi there, I am CAm.First off, do your brake lights work? This range of truck are notorious for a brake switch issue, and with the brake switch not working, your factory brake controller would not know your on the brakes. Can you check and see if this is the case? The switch is a very simple repair, takes about 10 mins and the switch is about 30$.
OK, are there any codes stored in the system?
Perfect. That will help get down to the root of your truck's issue.
No, in the trailer brake control module. THe common issue I have seen are the module, the relay and the brake switch.
The code will start with a C.
Sounds like a wiring or module issue. See and follow the info attached.