95 K1500 4x4, Back light issues

[95TruckCherryRed]

Hey guys I’ve been having some problems with my 95 Chevy Silverado, a couple of weeks a go I’ve had someone tell me I had no back brake lights. Ever since then I’ve tried to fix the problem. I have replaced all bulbs, replaced brake switch and even checked the fuze. Still no brake lights but the top light on the cab still works when useing the brake just not the two back ones. Any ideas??!?

 

[df2x4]

Check the wiring harness under the back end of the bed, where your trailer wiring plugs into if you have any installed. It's a common cause of this issue.

 

[Urambo Tauro]

+1^ That's a good place to start testing for power.

But before you crawl underneath, test your turn signals. If they don't light up in the rear, continue tracing power. Unplug that connector under the bed, clean up any dirt or corrosion, and try again. If that doesn't work, test for power at that point to determine whether the issue lies upstream or downstream.

 

[Hipster]

There's a ground that goes to the frame rail at the back left corner. Common culprit.