Check th e ground on the lights. If ok, you may have to have a mechanic check it out.
possible turn signal switch failure common on gm cars
How bout the turn signal indicator switch located in the steering column.
Have you checked the fuses or bulbs?
i have a 1992 F-150 all of my lights work but my rear passenger side brake lite and signal do not i have changed bulbs and checked all my fuses and wires what do i do?
Only thing left is two things: 1. Turn signal switch 2. Wiring between switch and fuses.
Replace the signal flasher relay assuming you have physically seen front and rear, left and right signal bulbs flash.
check that you have double filament bulbs in tail lights
Either hand signal or check and replace your fuses and turn signal bulbs.
If the brake lights are not coming on in your car and you have changed the bulbs and the fuses with no results, you could also check the wiring in your '98 Chevrolet Lumina. The wires may be damaged or even broken.
have you checked the bulbs and fuses
faulty switch
blowen fuse oh and check the bulbs I have the same problem with mine, I checked the bulbs and checked the fuses and they still dont work