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-   -   2001 GMC VAN - Tail Light Problem (http://www.diychatroom.com/f46/2001-gmc-van-tail-light-problem-86203/)

del.johnston 11-08-2010 05:33 PM

2001 GMC VAN - Tail Light Problem
 
I have a 2001 GMC VAN. When you turn on the head lights the break lights dont work. I have taken apart the rear tail light assembly to do some trouble shooting.

When you take the bulb out of the plug and test the two different contacts (running lights and break lights) they both test fine. When you put the light bulb back in and hit the breaks both lights go out.

It is driving crazy trying to figure this one out. Please help

Thanks

Mr Chips 11-08-2010 06:25 PM

Quote:

Originally Posted by del.johnston (Post 530983)
I have a 2001 GMC VAN. When you turn on the head lights the break lights dont work. I have taken apart the rear tail light assembly to do some trouble shooting.

When you take the bulb out of the plug and test the two different contacts (running lights and break lights) they both test fine. When you put the light bulb back in and hit the breaks both lights go out.

It is driving crazy trying to figure this one out. Please help

Thanks

you have a short somewhere in the wiring, it's probably a piece of bare wire touching the frame somewhere underneath. if you have a trailer harness wired in i'd start there

Bondo 11-08-2010 07:04 PM

Ayuh,... Sounds like a Bad Ground at that fixture..

paulrichmond 01-13-2011 09:15 PM

Wiring issue would be the lead culprit for this problem, can be very complicated on certain vehicles might want to check the wiring harness of the Van.

Know It ALL 01-13-2011 11:09 PM

Resistance.
Corrosion inside of the socket. Take some fine 400 grit sandpaper, wrap it around your finger and clean up the inside of the socket.
Or a bad ground.


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