98 sierra1500 4x4 all lights work excepttail lights fuses are good bulbs are new
u have a short in ur wireing.
Check the fuses first then check the bulbs.
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
Check stop light fuse Check bulbs double filamented smaller for brake lights Check the operation of the stop light switch Check socket for corrosion
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.
its on different bulbs
Defective or out of adjustment brake light switch. Look somewhere on the upper part of the brake pedal for the switch.
fuse, bulbs
There is a switch under brake pedal. This switch controls the brake lights. They some times go bad. Have someone stand behind vehicle while you push on brake pedal, if no brake lights come on. Try pushing the brake switch by hand. Check for power with a voltmeter.
check bulbs, fuses & reverse switch
The neutral safety switch is what controls the reverse lights. It is located on the top of the transmission almost directly below the brake master cylinder.
you do not adjust the brake lights check the bulbs or check switch top of brake pedal.