Removal Procedure

Replacing the body control module (BCM) may be necessary when you service the body control system.

IMPORTANT: The ignition switch should be in the OFF position when connecting or disconnecting the connectors to the BCM. Always disconnect the Brown BCM connector FIRST and connect the Brown BCM connector LAST. The BCM can set DTC(s) with the ignition switch in the OFF position. The BCM has battery run down protection for the courtesy lamp circuit. The BCM battery run down protection can not detect shorts on inputs or other circuits which it does not control. The scan tool can be used to put the BCM to sleep in order to check for current draws on circuits which are not controlled by the BCM or controlled by the battery run down protection system. If an excessive current draw is detected, refer to Battery Electrical Drain/Parasitic Load Test (w/BCM) in Engine Electrical.

Remove the radio from the vehicle. Refer to Radio Replacement in Entertainment.

Fig 1: View Of Heater Control

Courtesy of GENERAL MOTORS CORP.

Remove the heater control.
Pull the heater control (2) out and down in order to gain access to the body control module.

Fig 2: Identifying Body Control Module

Courtesy of GENERAL MOTORS CORP.

Push upward on the bracket retainer slightly and pull the body control module (2) from the bracket (1) at an angle.

Fig 3: Identifying Body Control Module Electrical Connectors

Courtesy of GENERAL MOTORS CORP.

Disconnect the electrical connectors (2) from the body control module (1).
Remove the body control module from the vehicle.