1998 Chrysler Town Country Sent BCM T And C Van Aes Repair Could Repair

Sent my BCM for my 1998 Chrysler T&C van to AES for repair. The could not repair, but rebuilt it? AES said they "programmed it". My garage mechanic said he needs to do some "programming"? Can he do it, or does a dealership have to do it?
My mechanic said he needs to "wake it up"?
HELP!!! I want my car back... it's been 4 weeks now...