1998 monte carlo brake light problems

Turn signal switch. With you foot on the brake have someone stand behind the car. Wiggle the turn signal lever and see if the the brake lights flicker.

I have a 1998 monte carlo and i think i have the answer. the problem is in the turn signal switch. there is a short or something with the wireing but when you go to brake pull the switch like your turninc on the bright lights but dont click it all the way and when you brake your tail lights should come on when you brake. you have to replace the switch or go into the steering wheel collom and tighten replace or fix whatever is the problem.

Its the turn signal switch for sure , if you press the turn switch for or back like your going to click your highbeams on the brake lights will come on, the switch is located under the steering wheel
had the same problem becarefull of the airbag

I have a 99' monte carlo, and I have the same problem. when i brake, the lights sometimes don't work unless i play with the lever, although the third brake light always works. when i turn my left turn signal on while my foot is on the brake, the right brake light doesn't work. i will try the turn signal switch.

I have a 1998 Monte Carlo and I am having that problem as well. I figured out how to work it one day leaving the hospital while pregnant. Thank goodness no body ever hit me. I don't see why this is not a recall. Too many of these cars have this issue. I work at a auto part store and see it all the time. Its been over 3 years and I'm still driving it with the faulty switch. But now I'm trying to find a easy fix to sell it and don't want to put any more money into it. Any answer's??