Troubleshooting Trailer Tail Lights Not Working When Connected to 2015 Chevy Pickup

Updated 06/05/2019 | Published 06/04/2019

Question:

All light work on trailer accept tail light I have it hoot to a 2015 Chevy truck

asked by: Perry

Expert Reply:

The first place to check is the fuse for the trailer tail light function on your 2015 Chevy pickup. I'm not sure what model you have but you can easily find the location of this fuse in your owner's manual.

If that looks good then use a circuit tester # PTW2979 to check the running light function on your 4-Way or 7-Way connector (see attached photos). If you are getting power to this pin then the issue is with the wiring on your trailer. If you don't get power then the issues is with the wiring between the fuse and your trailer connector.

For troubleshooting the trailer it is a matter of checking the wiring for the running lights to ensure they are in good working order and making sure that the grounds for those lights are connected to a clean bare-metal surface.

Let me know if you are still having issues and I can help you troubleshoot further.

expert reply by: Jon G