Dome lights not coming on when door is open

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CrashTestDummy

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We've recently completed some work on our '10 PPV. The last thing done was to replaced the cracked windshield. We had that done by a glass guy. He did very good work, and is very competent. I don't think he messed anything up when replacing the windshield, but I'm not 100% certain. We also replaced the driver's side motor mount around Christmas time. We pulled the inner fender liner, which, of course, meant popping all the wiring harnesses off it to get it out. That all seemed to go without issue.

When we open the door, the dome lights do not come on. I've tried adjusting the dome lamp dimmer, and pressing the knob in and back out. The only way to get the dome lights to come on is to turn the knob full left so they stay on all the time. That's not useful for getting in and out of the truck at night.

I've checked the 'Courtesy' fuse in the fuse panel, and it's good. I can't find another fuse that might be it other than the one labeled 'Courtesy'. I don't think there's anything in the under hood panel that would be associated with it, but don't know there, either.

Even though it's a PPV, it DID used to work, so I'm baffled here. Any ideas where to look? I'm about to deep-dive in the FSM, but thought I'd ask here to see if it's a known issue. Thanks.
 
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CrashTestDummy

CrashTestDummy

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Fixed! It turns out the upper half of the 'Dome Off' panel is actually the on/off switch. With the knob in the middle, you can adjust the brightness, or turn the dome lights on full-time, but it's NOT the on/off control. The 'button' is outlined in red in the attached:

Tahoe headlight and dome light switch.jpg
 

PG01

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Fixed! It turns out the upper half of the 'Dome Off' panel is actually the on/off switch. With the knob in the middle, you can adjust the brightness, or turn the dome lights on full-time, but it's NOT the on/off control. The 'button' is outlined in red in the attached:

View attachment 213383
I didn’t answer your original post because i thought you said you hit the button.... sorry
Just an fyi trucks that have fog lights the button is below the brightness knob
 
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