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.
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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