This sounds like the BCM has gone out but I would check all fuses first. Here is a guide to help you check the fuse and the location of the BCM I would remove it and check the connector for corrosion.
https://www.2carpros.com/articles/how-to-check-a-car-fuse
I would try a used BCM but you will need to get it programmed by a shop it should cost about $130.00
Check out the diagrams (Below). Please let us know what happens.
Cheers
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Wednesday, November 16th, 2011 AT 1:36 AM