I have a 1994 K1500 4x4: I have no brake lights, the bulbs are all good, i don't have any power at the fuse box with my test light. Any ideas. I have run out. is there a brake relay somewhere? My turn signals and running lights all work. at my trailer wiring harness i also have no power for my brake lights. Any ideas?

 

Check the switch at the brake pedal.

 

I had the same problem on my '90 chevrolet...Found a shorted wire in the harness going to the brake lights..

 

Hi there, I have the same problem; did you come up with anything that may help me? Very much appreciated.

Dave