check the ground for the lights
Check the backup light switch.
98 sierra1500 4x4 all lights work excepttail lights fuses are good bulbs are new
Check bulbs and switch
I would check the wires just behind the light. I had the same problem and the wires were broken a little just wiggle them as the lights are on.
I would check the wires just behind the light. I had the same problem and the wires were broken a little just wiggle them as the lights are on.
Try checking the neutral safety switch. This switch is the one in automatic transmissions that makes the backup lights "flip" on when going from park to drive as you go through the gears. When my neutral safety switch shorted my backup lights stayed on constantly.
Did you recently change or install something in your car like a stereo or GPS?
well it seems to be a common problem it might just be the switch on the transmission
Had the same problem with my GL. What I've heard is the back up blade in the shifting fork slips or falls out of line causing no contact when you shift into reverse. They have to replace reconnect thru transmission. 5 years without backup lights.
Change brake light bulbs Just remove the rear license plate. You can change the backup lights and brake light easily.
Bad bulbs, bad switch located either on steering column or on transmission
There is a backup switch in the gearbox. When you shift into reverse, the gear box switch contacts the switch and lights the white reverse lights. If you find that the reverse lights don't work it could be that the switch is not being triggered by the mechanism inside the gearbox. This is providing that everything else is working; wiring,bulbs,etc.