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2002 GMC Yukon Headlights do not come on.

Tiny
SIR WILLIAM
  • MEMBER
  • 2002 GMC YUKON
  • V8
  • 4WD
  • AUTOMATIC
  • 120,000 MILES
My Yukon's low beam headlights do not come on, ever. All of the other lights work properly. I read the User's Manual and checked the methods found there to turn the headlights off, but none were the culprit. Is the relay the problem? Thanks.
Friday, April 11th, 2008 AT 9:30 AM

6 Replies

Tiny
RHALL77
  • MECHANIC
  • 3,361 POSTS
I think there is a seperate fuse for each headlight. Did you check the fuse block under the hood?
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Friday, April 11th, 2008 AT 9:50 AM
Tiny
SIR WILLIAM
  • MEMBER
  • 2 POSTS
Yes, I checked all of the fuses; they're fine. Looking at the "fuse box" legend, it appears that the headlights are wired through a relay. Perhaps the relay is bad or it's the circuit breaker the owner's manual talks about. Thanks!
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Friday, April 11th, 2008 AT 2:23 PM
Tiny
RHALL77
  • MECHANIC
  • 3,361 POSTS
Did you check to see if you have power to the electrical connector at the head lights?
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Friday, April 11th, 2008 AT 2:28 PM
Tiny
SIR WILLIAM
  • MEMBER
  • 2 POSTS
Replaced the relay; works fine!
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Friday, April 18th, 2008 AT 10:47 AM
Tiny
EDEFRANCE
  • MEMBER
  • 1 POST
I have the exact same problem. What is a relay?
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Sunday, June 8th, 2008 AT 10:13 AM
Tiny
GSCHALL
  • MEMBER
  • 10 POSTS
I never heard of a relay, but if you can tell me where it is I will replace it no questions asked.

Appreciate your response on this very much.

Thank You!
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Tuesday, June 9th, 2009 AT 12:20 AM

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