GMC Yukon Brake Light 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...

3rd Brake Light Out No Power .. Check Fuses All The Fuse In Both Inside And Outside Boxes Just Because I Was There Anyways. Check Light With...

I Have Replaced The Bulbs, Relay Switch, Brake Switch And Check Fuses On Side Of The Dash And The Ones Under The Hood. The Top Third Brake...

Brake Lights Not Working None.

I Have No Brakes Lights At All, My Lights Work But When I Step On The Brakes I Get Nothing. I Changed The Switch On The Pedal And Checked...