How do you troubleshoot the brake lights on a 1996 Chevy Tahoe?

when you remove the brake light and unscrew the cradle which the bulbs fit into remove the bulbs and make sure the connectors are clean and are get a clean and secure connection with the bulbs. Then get a wire tester that light up when current is flowing and use that to check for power. If your lights aren't working and the bulbs and fusesare good,try wiggling the hazard light switch while depresssing the brake pedal. If this causes them to work, you must replace the switch assembly.