dome light does not come on?

2002 CHEVROLET BLAZER
105,000 MILES • 6 CYL • 4WD • AUTOMATIC
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TERRY VANDEHEI
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When I open any of the doors the dome light does not come on; but I can turn it on with the dimmer switch. I've looked for a bad fuse but did not find one. Is there a switch somewhere that controls this function?
Feb 2, 2008 at 7:55 AM
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KASEKENNY
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More than likely we have a control issue. The dome light should come on when a door switch is open so if it doesn't respond to any door opening then it is unlikely that all the door switches are fault.

Also, if you can turn it on with the switch then the fuse and bulb are fine. So we need to check for power coming from the switch to the BCM. If the BCM is getting the signal from the door switch then I would put a BCM in the vehicle.

https://www.2carpros.com/articles/how-to-check-wiring

I attached the wiring diagram below that we need to follow so please let us know what you find with this.

Thanks
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Jun 8, 2021 at 8:31 AM