The bulbs are burnt out.
have you checked your fuses?
there was a recall on the brake light switch you might want to check into that
No brake lights but turn signals work? Turn signal switch brakes route through it.
Blown fuse, both lights are burnt out, There is a wiring or ground issue.
Rear loom ground not contacting. Bulbs burned out or missing. Brake light switch or connection to it is fubared.
Check the switch on the brake pedal
this tells you is a simple wiring problem.most likely a loose wire from the third light to the other lights.(third lights provides the power to the other lights)
brake switch ???
First thing I'd check would be the fuse for the stop lights. If it is okay the next thing I'd check would be the stoplight switch located under the dash where the brake pedal is suspended.
Bad socket? Bad ground? Problem in steering column switch?