A brake fluid leak in the brake system, LOW BRAKE FLUID.
The light should be controlled by a switch operated by the emergency brake handle. The switch could be out of adjustment or could be bad.
The brake light switch is under the dash, and whenever the brake pedal is touched the brake light comes on. If the switch has failed or is out of adjustment it will leave the brake light on.
If a 1991 Chevrolet S10 Blazer warning brake light always stays on, it could just be a malfunction of the light. To reset it, disconnect the battery for 10 minutes.
A defective or out of adjustment brake light switch.
brake and abs light on , on 1994 Chevy Cavalier Z24
the brake light switch is on the top of the brake pedal arm. under dash.
Brake fluid in reservoir below acceptable level.
The Chevrolet Colorado brake light switch is quite simple to change. The brake light switch simply plugs in and out.
something as simple as a burnt bulb or the wire to the light could of been stripped by rubbing against metal
The instructions on how to reset the brake maintenance light in a Chevrolet Malibu can be found in the owner manual. It can be viewed for free at Chevrolet's official website.
Add brake fluid
A defective brake light switch could cause the problem. Also a defective turn signal switch could also. The brake lights work through the turn signals. It cancels the brake light so that the turn signal can work.