Some Trailer Lights Not Working After Fixing Damaged Wiring Harness on a 2003 Chevy Silverado

Question:

Hi. I have a 2003. Silverado. I had an issue with all of the lights working on a trailer. I found a fuse bad under the hood. Replaced and all worked fine. The wires got smashed and torn by the hitch. 3 wires were cut. I rewired it back together Now the right side and break lights will not work. I rechecked the fuse. All are good. I have used a light tester to determine I am no longer getting power on 2 of the wires. Which is right back to where I started before I replaced the fuse. Any ideas ??

asked by: Chris

Expert Reply:

There could be other fuses that were affected in the tow package wiring for your 2003 Chevy Silverado. Check the fuses labeled VEH CHMSL, LT TRLR ST/TRN, and RT TRLR ST/TRN in the instrument panel fuse block.

In the center instrument panel fuse block check the one labeled TRAILER.

Under the hood check the TRL PARK and TRL B/U locations.

I think what happened was when the wiring harness was damaged it caused a short that blew a fuse or fuses. That may be the only issue so check those and replace as needed. If you still have the same issue let me know.

expert reply by: Michael H