low beam lights dont work

1993 GMC SUBURBAN
155,000 MILES • V8 • 2WD • AUTOMATIC
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LISK407
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  • 1 POST
I own a '93 GMC suburban 1500 2wheel dr. w/350 engine. My low beam headlights went out, my high beam work fine. I replaced the switch a few years ago when similar problems happened, could something else have gone bad since the lights flickered a few days then out completely?
Jan 18, 2011 at 1:00 PM
Repair Safety Notice: This information is for general instructional purposes only. Vehicle repair can be dangerous. Verify all information, follow manufacturer service procedures, use proper tools and safety equipment, and consult a qualified repair shop when needed.
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JDL
  • CAR REPAIR CONTRIBUTOR
  • 16,098 POSTS
With the headlamp switch on, check for voltage and ground at the headlamp connector. Lite green wire is voltage for high-beam, tan wire is voltage for low-beam. Black wire is ground.

The diagram shows dual headlamps on both side and single, don't be confused, the wiring colors for voltage and ground, are the same.
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Jan 18, 2011 at 8:58 PM
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