The brake lights turn signals reverse lights all work but the tail lights when you head lights are on do not work.
2001 gmc sierra tail lights not working.
I have changed the bulbs fuses checked the tail light circut board checked the headlight switch.
Start at the bulb fixtures cleaning and refastening.
Look for cracked broken wires as you go.
Electrical is not my strong point so any help would be.
I noticed the drivers side tail light was not working.
First guess bulb bad but not that lucky.
Chevy truck forum silverado sierra gmc truck forums.
Hey guys new to the forum just purchased a 2001 2500hd 8 1 allison 4x4 on saturday.
Changed bulbs out and did nothing.
I have changed the bulbs fuses checked the tail light circut board checked the headlight switch.
It could happen due to a loose connection of the wire or the corrosion or damage of the wire ends.
Rear parking lights dont work 2001 gmc sierra it would then be a bad ground.
Nov 07 2011 2 38am.
Electrical is not my strong point so any help would be.
Connect the light switch to a good ground with a jumper wire and press the brake pedal.
The brake lights turn signals reverse lights all work but the tail lights when you head lights are on do not work.
If the brake light turns on you have to fix the ground connection.