GM Service Manual Online
For 1990-2009 cars only
Makes 🢒 Cadillac 🢒 2008 🢒 XLR 🢒 Power and Signal Distribution 🢒 Data Communications 🢒 Body Control Module Replacement

Removal Procedure

    Object Number: 1659415 Size: SH

    Notice: To prevent possible electrostatic discharge damage to the BCM, do not touch the connector pins or soldered components on the circuit board.

    Notice: To prevent internal BCM damage, the ignition must be OFF when disconnecting or reconnecting power to BCM (for example, battery cable, BCM connectors, BCM fuses, jumper cables, etc.).

    Notice: The BCM electrical connectors are designed with tabs and slots that allow the connectors to only fit one way. The connectors do not require excessive force if being installed correctly. Installing the connectors with the wrong mating half or upside down can cause damage to the connector, the BCM, or other vehicle components or systems.

  1. Turn OFF the ignition switch.
  2. Remove the kick-up panel at the right front floor. Refer to Front Floor Kick-Up Panel Replacement .
  3. Remove 3 retaining screws (1) which secure the body control module (BCM) (2) to the multiuse bracket.
  4. Disconnect the harness connectors from the BCM (2).
  5. Remove the BCM (2) from the vehicle.

Installation Procedure

    Object Number: 1659415 Size: SH

    Notice: To prevent possible electrostatic discharge damage to the BCM, do not touch the connector pins or soldered components on the circuit board.

    Notice: To prevent internal BCM damage, the ignition must be OFF when disconnecting or reconnecting power to BCM (for example, battery cable, BCM connectors, BCM fuses, jumper cables, etc.).

    Notice: The BCM electrical connectors are designed with tabs and slots that allow the connectors to only fit one way. The connectors do not require excessive force if being installed correctly. Installing the connectors with the wrong mating half or upside down can cause damage to the connector, the BCM, or other vehicle components or systems.

  1. Turn OFF the ignition switch.
  2. Connect the harness connectors to the BCM (2).
  3. Position the BCM (2) to the multiuse bracket.

    4. Notice: Refer to Fastener Notice in the Preface section.

  4. Install 3 retaining screws (1) to the BCM (2).

    5. Tighten
    Tighten the screws to 2 N·m (18 lb in).

  5. Install the kick-up panel. Refer to Front Floor Kick-Up Panel Replacement .
  6. If you are installing a new or replacement BCM, program the BCM to the current vehicle. Refer to Control Module References .