Troubleshooting Factory Trailer Brake Controller Not Working On a 2004 Chevrolet Suburban

Question:

I have 12 volts power to the B+ feed wire but No voltage to the blue output wire.I have checked the grounds .Also,the indicator light on the control unit does not light up anymore with the trailer connector plugged in. What s the problem?My vehicle is a 2004 Chevy Suburban with the factory installed electric trailer brake controller. Also the brake lights on the truck are working properly so the brake light switch is working! PLEASE HELP!!!!!! Thanks

asked by: Wayne H

Expert Reply:

It sounds like the factory controller on your 2004 Chevrolet Suburban needs to have the computer re-flashed by a dealer. The factory brake controllers are tied into the computer and there are times where it will need to be re-flashed to correct issues. Since you have confirmed the controller has power and is getting signal from the brake light switch you should be getting output on the blue wire.

You can also replace the factory setup with one like the Redarc Tow-Pro Elite Brake Controller # RED63RR. This has a low profile design like the factory controller and will connect to your Suburban with the Tekonsha Plug-In Wiring Adapter # 3015-P.

expert reply by: Bud M