GMC BRAKE LIGHT NOT WORKING

Both Sides And Third Top Brake Lights Not Working.

I Just Brought The Vehicle Listed Above Slt Model. I Found Out, The Horn When Pushed On Doesn’t Sound Out. I Check The Fuse And Relay And...

Tail Lights Work On Both Sides, But The Brake Light Only Comes On For The Left Side And High Middle Also Works, But The Right Side Brake...

Both Brake Lights L/r (top One Ok) Are Not Working Checked The Fuse And And Bulbs Already