check the bulbs to see if there burnt and check your fuses
In the 1993 Chevy Caprice there is a brake sender located inside the steering column where the brake pedal is attached. Perhaps the brake lights are not working because of this, when a person hits the brakes. There could also be a fuse blown or a broken or shorted wire.
Check the ground wire. You have a bad connection somewhere.
do your brake lights work wen pressing brake . if not its the brake pedal sensor
Defective or misaligned brake light switch.
Check bulbs they are double filamented smaller for brake lights larger for tailights Check the fuse Check the operation of the stoplight switch
Break lights come on when you step on the break, they do not come on when the head lights are turned on.
wiring harness to roof brake light has been fried. Brake lights don't work, cruise control doesn't work, unable to move shifter from park. Transit Connect 2010
Sounds like a bad Brake Light Switch. It's located on the steering column.
check that you have double filament bulbs in tail lights
there is a short in the relay for the head lights
The brake light switch might not be connected properly. Remove the brake light switch for 10 seconds and replace it to its original position.
Believe it or not, I have had to disconnect the cig lighter in order for the tail lights to work. Sounds far fetched but it does work!