GM Service Manual Online
For 1990-2009 cars only
Makes 🢒 Buick 🢒 2003 🢒 Century 🢒 HVAC 🢒 HVAC Systems - Automatic 🢒 Body Control Module Replacement

Removal Procedure

    Object Number: 642120 Size: SH
  1. Disconnect the negative battery cable. Refer to Battery Negative Cable Disconnection and Connection in Engine Electrical.
  2. Remove the left instrument panel insulator. Refer to Instrument Panel Insulator Panel Replacement - Left Side in Instrument Panel, Gages and Console.
  3. Disconnect the BCM electrical connectors.
  4. Push the BCM up and move the bottom of the BCM away from and out of the mounting bracket slot in order to remove the BCM.

Installation Procedure

    Object Number: 642120 Size: SH
  1. Push the top of the BCM up into the mounting bracket in order to install the BCM. Then, while holding the BCM up, engage the bottom of the BCM into the mounting bracket slot.
  2. Connect the BCM electrical connectors.
  3. Install the left instrument panel insulator. Refer to Instrument Panel Insulator Panel Replacement - Left Side in Instrument Panel, Gages and Console.
  4. Connect the negative battery cable. Refer to Battery Negative Cable Disconnection and Connection in Engine Electrical.
  5. Set up the new BCM. Refer to Body Control Module (BCM) Programming/RPO Configuration .