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