1995 Suburban Brake Light Problem NEED HELP

I have a 1995 Chevrolet Suburban and the turn signals in the back and the brake lights do not work, with the exception of the overhead brake light. They stopped working yesterday. If anyone knows whats wrong please let me know. Thanks

Welcome to AF, I am moving this to the proper Suburban forum below.

Check for bad grounds or an issue with a trailer harness wiring.