Crazy phantom door dome light issue

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541DenaliErick

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Looks like ajar switch can be DOOR AJAR or DOOR CLOSED. And the courtesy lamp maybe DOOR OPEN or DOOR CLOSED..

That makes me think the door open switch turns on the dome lights and the ajar switch lets the BCM know which doors are open? idk
You are totally right.
It's the craziest thing to me lol.
One would think that one input could cover both functions, but no, GM. Lol
 

Joseph Garcia

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Great to read that members of this great Forum were able to assist you in resolving your issue.

Please add the word "FIXED" to your thread's title, to let others who are experiencing a similar issue know that this thread has an identified solution.
 

DBacon

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You are totally right.
It's the craziest thing to me lol.,and "Closed"
One would think that one input could cover both functions, but no, GM. Lol
What if "Open", "Ajar", and "Closed" are 3 positions? Needs more than one switch...
 

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