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1995 GMC Sonoma Lighting Electrical

Tiny
EFAIN1
  • MEMBER
  • 1995 GMC SONOMA
  • 2.2L
  • 4 CYL
  • 2WD
  • MANUAL
  • 132,000 MILES
My headlights don't come on. Every other light works except for the headlights. The driving lights are working but no headlights.
Friday, January 30th, 2015 AT 1:06 PM

3 Replies

Tiny
JDL
  • MECHANIC
  • 16,098 POSTS
Could be headlamp switch or dimmer switch or wiring. Note the wire colors in diagram, check for voltage. The diagram is for composite lamps.

As you can see, the headlamp switch sends voltage to dimmer switch on yellow wire. You can see wire colors for high and low beam.

Any work on steering column and you need to disarm air-bag, where applicable.
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Friday, January 30th, 2015 AT 2:27 PM
Tiny
EFAIN1
  • MEMBER
  • 2 POSTS
Hey thank you! I appreciate the help. Where are these switches located? When this happened I heard some ticking from the glove box, I found some relays there I replaced the one that seemed to operate the lights and the problem still exists.
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Friday, February 6th, 2015 AT 1:41 PM
Tiny
JDL
  • MECHANIC
  • 16,098 POSTS
Your headlamp switch should look like the picture. Your dimmer switch should be part of multifunction switch on the steering column.
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Saturday, February 7th, 2015 AT 11:39 AM

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