Headlights including low and high beams dont.

Tiny
ANONYMOUS
  • MEMBER
  • 1991 GMC VAN
  • 100,000 MILES
Headlights including low and high beams dont work. What is the cause?
Friday, January 4th, 2013 AT 4:41 AM

2 Replies

Tiny
SATURNTECH9
  • EXPERT
Have you checked the fuses? Also do you have a multi meter to do some testing?
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Friday, January 4th, 2013 AT 4:45 AM
Tiny
CARADIODOC
  • EXPERT
That's what you pay mechanics to diagnose. The most likely cause is a defective head light switch, especially if the tail lights also don't work. The next suspect would be the dimmer switch. Check both connectors for blackened terminals or signs of melted plastic.
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Friday, January 4th, 2013 AT 4:45 AM

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