I had the same problem with my 99 grand prix and changed bulbs brake light swith , fuses and found out that it was a multi - function switch that was causing my brake lights not to work it was a little expensive but you need brake lights!
I too had the same problem. I did the exact same thing as stated above, the hazard button was hard to push down, after I got it down, I had fully functioning brake lights. I would like to hear from the previous poster as to if this fixed his problem, or did it happen again?
check for bad switch under dash above pedal arm, generally fail after 75,000 miles
Probably the wrong bulbs or the brake lights are getting stuck "on". Or maybe a combination of the two. Check that you have the right bulbs and check to make sure something isn't keeping the brake lights on. FriPilot
Have an electrician check the wiring that goes to the brake lights in the trunk of the car.
check that you have double filament bulbs in tail lights
Are you getting power to/through the switch? Sockets grounded? Open wire to the sockets?
check your bulbs
To replace the brake light on a 2000 Pontiac Montana open the trunk to reveal the housing units. Find the lights and pull the bulbs out. Replace the units.
You need new bulbs
Check the brake light switch.
on some cars the tail lights and brake lights are totally different bulbs gain access to the bulbs and have someone push the brakes so that you can determine which bulbs are the brake lights and replace the tail lights
AnswerThe bulbs for the brake lights are usually separate from the normal tail light bulbs. Check and replace the brake bulbs first, and if they are still not working examine the fuses, switch and wiring.
brake light switch, it is typically located above the brake pedal somewhere on the brake pedal arm