I have a 2005 GMC 2500 Pick up and the Curt Captivator 4 brake controller Sometimes it works sometimes it doesnt. I get an error of OC on the unit. ANy insight would be great or aq website to look up the error codes?
Expert Reply:
The error code you are receiving indicates that the controller is not reading any information from the connected trailer. Using a circuit tester, like part # 40376, check the brake wire pole on your trailer connector for voltage when the manual override is activated. Then check the connector, to make sure there is no corrosion. Then trace the brake wire back from the connector to the trailer brakes. Since it is an intermittent problem, you will probably find a pinched wire that is occasionally grounding out to the trailer frame.
expert reply by: Mike
