Cadillac: body control module, cadillac sedan deville, body control module

Question
I have a 1989 cadillac sedan deville, I recently replaced the idle speed control actuator, igniter module,and the pick up coil, now I'm getting codes E47,which I found out that indicates the body control module, but no one can tell me what that is or where to locate it under the hood,I also got E52,E53,and E55. Please Help!! Thanks in advance

Answer
E47 = BCM - ECM computers have a data problem.

E52 = You disconnected the battery in the past.

E53 = Distributor signal interrupt.

E55 = TPS misadjusted.


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