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Interior lights not working?

Tiny
BRIANOB
  • MEMBER
  • 2003 CHEVROLET TAHOE
  • V8
  • 2WD
  • AUTOMATIC
  • 125,000 MILES
The interior dome lights and door lights do not come on when the doors open. The rear dome light does not come on when I open the rear door hatch. When I use the dimmer switch I cannot turn lights on. Dashboard cluster lights work. I can manually turn on the dome lights at the switch by the light. I checked the fuses at the dome lights and they are fine (obviously since I can manually turn the light at the dome light location
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Friday, October 1st, 2010 AT 11:31 PM

6 Replies

Tiny
GMTECH
  • MECHANIC
  • 537 POSTS
This might sound stupid but do you have the dome light override switch pressed in. If not perhaps the switch is defective. Here are the interior light wiring diagrams so you can see how the system works. Youc an see the BCM controls the light so I have included the BCM replacement instructions as well. Check out the diagrams (Below). Please let us know what you find.
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Wednesday, October 27th, 2010 AT 9:18 PM
Tiny
KB48909
  • MEMBER
  • 3 POSTS
  • 1996 CHEVROLET TAHOE
  • V8
  • 4WD
  • AUTOMATIC
  • 120,000 MILES
My interior lights won't go off when the car is on and off. I checked the dimmer switch and the lights still stay on. To prevent my battery from running dead I just take the fuse out. I was wondering do I need a new headlight/dimmer switch?
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Friday, October 16th, 2020 AT 1:21 PM (Merged)
Tiny
MASTERTECHTIM
  • MECHANIC
  • 4,749 POSTS
You can try unplugging dimmer switch and if lights go out then replace it.
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Friday, October 16th, 2020 AT 1:21 PM (Merged)
Tiny
KB48909
  • MEMBER
  • 3 POSTS
I replaced the dimmer switch and its doing the same thing. So what do I check now?
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Friday, October 16th, 2020 AT 1:21 PM (Merged)
Tiny
AIMELECTRIC530
  • MEMBER
  • 1 POST
  • 1995 CHEVROLET TAHOE
Electrical problem
1995 Chevy Tahoe V8 Four Wheel Drive Automatic

Bought a used 95 tahoe with a whipple supercharger on it. When I test drove it things were fine brought it home washed it then parked it. An hour or so went by got in it to leave noticed that when I stepped on the gas while in drive interior lights came on. Put in reverse stepped on it no lights. Put in neutral revved a little and still no lights. Put back in drive and they came on. Came up to stop sign vehicle acted like it wanted to die picked back up to normal idle. There is also aftermarket alarm.
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Friday, October 16th, 2020 AT 1:22 PM (Merged)
Tiny
FACTORYJACK
  • MECHANIC
  • 4,159 POSTS
The only thing that comes to mind after review, is the rear cargo door jamb switch. Theory would support this, as inertial force in drive would act against it, and not any other time. ALLDATA shows me a pretty poor illustration of a pin switch in the RH 'd' pillar, in the cargo door opening. It is shown in the schematic, as a two wire switch, colors purple and black. It looks like you can confirm this as the culprit, by first locating the switch, and then just disconnect it. If it doesn't exhibit the same symptom, you are on the right track. How is the adjustment on the rear door, and can you duplicate it by push/pull or rattling the door?
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Friday, October 16th, 2020 AT 1:22 PM (Merged)

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