I have a 2004 Chevy Impala that I bought new in 2003. It has 87,000 miles on it. Evey time I drive in the rain the DOOR AJAR light comes on and the doors unlock intermittanly. When I park it in my garage for a couple of days it is ok again. Today, after diiving in the rain along with the door ajar problem when I parked in my garage the interior lights would not go off for 10 minutes. What may be my problem? Can I fix this myself? I have nad no other problems whith this car. It has been a great Chevy. Thank You. Bill

 

Sounds like a BCM problem

 

Thank you HotSauce6226 for your reply. Just where is the BCM located ond what does it look like on the car?

 

Under the drivers dash. You cant miss it