Check to make sure you have power at the brake light switch, if you have power at the switch, depress the brake pedal, and check for power out of the switch, if no power out with the brake pedal depressed, you need a new brake pedal switch.
Bad brake light switch
Brake switch needs replaced.
you need to replace the brake light button under the brakes inside the car
ab the above the e-brake peddle
It depends. You may need a new Brake harness. It's an electrical problem you have ti get it looked at.
On the left side of the engine near the brake booster/master cylinder.
How do you replace brake lights
at the top behind brake pedal, don't remove the lower switch it for the cruise control
Trunk and fuel door release?
Brake pad wear sensor. Could be low brake pads or a sensor that is missing or disconnected.
the turn signal switch is probably bad
the fuse and the relay should be located in the jb #2 which is right beside the batteryRead more: Where_is_the_relay_or_fuse_for_the_brake_lights_on_a_1998_Catera