Low beam lights dont work

Tiny
LISK407
  • MEMBER
  • 1993 GMC SUBURBAN
  • V8
  • 2WD
  • AUTOMATIC
  • 155,000 MILES
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?
Tuesday, January 18th, 2011 AT 1:00 PM

1 Reply

Tiny
JDL
  • MECHANIC
  • 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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Tuesday, January 18th, 2011 AT 8:58 PM

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