Troubleshooting Trailer Wiring Not Working on a 2023 Chevy Silverado 3500

Updated 09/05/2024 | Published 08/30/2024

Question:

Hello i have a 2023 Chevy 3500 HD with a trailer. Driver side lights work but passenger lights do not work on the trailer. 7 way pin on the bumper and in the bed of the truck. I checked all the fuses on the truck for trailer and none of them made my circuit tester light up. The 7 way pin on the bumper was tested as well and the turn signals were not working. I connected to the 7 way in the bed of the truck and same thing not lights on the passenger side. Made sure i have good ground. Only thing that i can think of is the recall this year of truck has for the trailer control module.

asked by: Omar A

Expert Reply:

Sounds like you've followed every troubleshooting tip I could offer you Omar. I do think you need to reach out to GM about your wiring issue especially knowing there's a recall.

expert reply by: Jerred H