Troubleshooting Trailer Wiring That Stopped Working on 2005 Chevy Silverado

Question:

I have a 2005 Silverado 2500 HD . My problem is my truck harness have power for driver side turn signal but no power for right side turn signal and markers and brake lights. I did a power check with a current tester only one light up no power on others

asked by: Jaime

Expert Reply:

I'd check the backside of the connector for the condition of the wiring. Most likely something damaged some wiring if several of the circuits just stopped but one is left working. Another possibility is corrosion on the pins of your 7-way. You can try cleaning them with sandpaper. Or you can also check the trailer wiring fuses underhood to see if you can find any blown fuses.

expert reply by: Jameson C

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