Rear parking lights dont work 2001 gmc sierra it would then be a bad ground.
2001 gmc sierra tail lights not working.
Look for cracked broken wires as you go.
It could happen due to a loose connection of the wire or the corrosion or damage of the wire ends.
Changed bulbs out and did nothing.
If the brake light turns on you have to fix the ground connection.
Hey guys new to the forum just purchased a 2001 2500hd 8 1 allison 4x4 on saturday.
The brake lights turn signals reverse lights all work but the tail lights when you head lights are on do not work.
When i checked the wires at the tail light only the wire that worked the turn signals had juice the other 3 did not.
When i checked the wires at the tail light only the wire that worked the turn signals had juice the other 3 did not.
Electrical is not my strong point so any help would be.
First guess bulb bad but not that lucky.
Start at the bulb fixtures cleaning and refastening.
Nov 07 2011 2 38am.
I noticed the drivers side tail light was not working.
I have changed the bulbs fuses checked the tail light circut board checked the headlight switch.
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Connect the light switch to a good ground with a jumper wire and press the brake pedal.
Chevy truck forum silverado sierra gmc truck forums.