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Discussion Starter #1
Hey guys I have no clue whats wrong with my car, my map lights on my review mirror won't turn off, the only way to get them to shut off is to pull the fuse
 

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What year? Do you have a sun roof?
 

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Probably a bad switch. Let me see if I can find the "how to replace map switch"

---------- Post added at 09:40 PM ---------- Previous post was at 09:14 PM ----------

Are you talking about this lamp???

 

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I cut stuff
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No he's talking about the lights on the mirror because he doesn't have a dome light.


have you by chance installed LED bulbs in it?
 

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Ah!!! Just reread his first post duh! I must be tired I couldn't find any reference to those lights in the service manual. Does anybody know the rpo? I might be able to track it that way.
 

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I cut stuff
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I'm just wondering if he has LED bulbs because if he does that is why they are staying on and it's no big deal.

If it's regular bulbs then there is something going on.
 

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I see that Coby7 wanted RPO codes potentially - I can run your VIN to see what I can come up with if you wanted to send me the last 8 digits.

Sarah, GM Customer Service
 

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OK, found the diagram finally. RPO code DC4. Those lamps are controlled by "BCM" applying a ground to pin "A10". So if they are staying on you probably have a chafed wire touching ground somewhere. These should turn off after 20 minutes in the event that the "BCM" fails to turn them off. The BCM will turn off supply voltage "A3" to prevent the battery from being discharged.

 

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