2002 Pontiac Grand Prix • 6 cylinder 2WD Automatic • 118,000 miles

Brake lights on 2002 Pontiac Grand Prix are still not working after replacing bulbs, checking all fuse boxes and switch (toggle) under brake. What else could it be that would still cause no brake lights. The brake light works in back window but not tail lights. Thanks.
April 26, 2011.

You most likely have a bad combination switch in the steering column. The 2 lower lights have to pass through it so the turn signals can cancel the brake lights. They fail a lot.

Apr 26, 2011.
The circuit passes through the multi-function turn signal lever.

With brake oedal deppressed, test the Dark Green and Yellow wire from multifunction turn signal lever for battery voltage. Ensure there is voltage going into switch of White wire.

Apr 26, 2011.