I have a 2003 Silverado and the bottom brake lights are not working but the one on the cab is

[John Vavalis]

I'm looking to solve the problem

[diyer2]

I'm looking to get more information.

Are you saying the brake lights on the back of the bed rails at the tailgate or the normal brake lights aren't working but the brake light on the cab roof is working?

Have you checked the bulbs and fuse?

Check the brake switch.

Check wiring for shorts.