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Dome/courtesy lights stay on.

Tiny
NETWPRO
  • MEMBER
  • 1997 GMC YUKON
  • 225,000 MILES
I recently purchased this 4WD Yukon, SLE, 5.7 liter, auto trans vehicle and the dome lights did not work. Most bulbs were burned out and the rest were missing. I replaced them all and all work but, they do not go out even when the "dome override" switch is depressed. Removing the fuse does shut them off.
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Tuesday, May 1st, 2012 AT 12:24 PM

3 Replies

Tiny
FIXITMR
  • MECHANIC
  • 9,990 POSTS
This circuit is ground triggered rather than hot triggered. So any short to ground will keep it on.
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Tuesday, May 1st, 2012 AT 2:26 PM
Tiny
NETWPRO
  • MEMBER
  • 2 POSTS
I appreciate the fast response. There is no evidence of any wiring cobbling or signs or compromise to the factory wiring. Can you suggest a vulnerable fault area to begin troubleshooting further? This vehicle does have that dome light feature where even when the dome override is depressed, the dome lights will come on for a timed interval when vihicle is first entered or exited.
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Wednesday, May 2nd, 2012 AT 6:00 PM
Tiny
FIXITMR
  • MECHANIC
  • 9,990 POSTS
Other than the control for that auto feature it is possible that a wire routing got pinched and has finally compromised the insulator. Rare but it does happen.
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Friday, May 4th, 2012 AT 8:34 PM

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