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No low beam and wipers only work on high

Tiny
EJWARREN
  • MEMBER
  • 2002 GMC YUKON
  • 5.7L
  • V8
  • 4WD
  • AUTOMATIC
  • 173,000 MILES
I have a 2002 Yukon XL SLT; the headlights only work on high beam and the windshield wipers only work on high. Some one suggested to me that it may be the multi-function switch on the steering column that controls both. Any insight into this problem; any suggestions on how to trouble-shoot?
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Friday, March 7th, 2014 AT 7:05 AM

1 Reply

Tiny
WRENCHTECH
  • MECHANIC
  • 20,757 POSTS
These are totally independent circuits and the problems have to be approached that way. Nine out of ten times the low beam problem is just bulbs. Diagnose one circuit first and you will ultimately find out if they are related. You can test for power and ground at the light itself because the dimmer switch controls the ground to the lights.
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Friday, March 7th, 2014 AT 8:06 AM

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