You may have to change the sensor, it's a $9.00 part at autozone.
Changing the brake light switch in your Chevrolet Monte Carlo is quite simple. The brake light switch simply plugs in and out.
dot 3
.The 2000 Chevrolet Monte Carlo brake caliper bolt size is 9/16. The brake caliper bolt can be purchased at most auto-parts stores
* It could be a blown fuse or * the brake light switch on top of the brake pedal under the dash is bad or * the turn signal switch is bad.
Brake light switch on the brake pedal is defective
on top of the brake pedal under the dash.
check your break fluid.
It should be in the fusebox with the rest of the fuses.
carefully
ratchet or socket
possibly, if there is a float attached to the lid, another cause of the abs light is metal shavings sticking to the magnetic sensors
If your 98 Monte Carlo brake lights do not work when you hit the brakes, but the top one behind the glass works, check the bulbs. If the bulbs have burn out, the lights will cease to work.