GM Service Manual Online
For 1990-2009 cars only
Makes 🢒 Chevrolet 🢒 2004 🢒 Colorado Pickup - 2WD 🢒 Brakes 🢒 Hydraulic Brakes 🢒 Body Control Module Replacement

Removal Procedure

Important: 

   • The ignition switch should be in the OFF position when connecting or disconnecting the connectors to the body control module (BCM).
   • Always disconnect the black body wiring harness connector FIRST and the gray instrument panel (I/P) wiring harness connector LAST.
   • Always connect the black body wiring harness connector FIRST and the gray I/P wiring harness LAST.
   • Do not open the BCM housing. The module does not have any serviceable components. The module may be replaced only as an assembly.


    Object Number: 1283827 Size: SH
  1. Ensure the ignition switch is in the OFF position.
  2. Remove the right front hinge pillar trim panel. Refer to Body Hinge Pillar Trim Panel Replacement - Right Side in Interior Trim.
  3. Disconnect the body wiring harness electrical connector (1) from the BCM.

    4. Object Number: 1283829 Size: SH
  4. Disconnect the instrument panel (I/P) wiring harness electrical connector (1) from the BCM.

    5. Object Number: 1283832 Size: SH
  5. Release the fastener retaining the body wiring harness electrical connector to the BCM.

    6. Object Number: 1283835 Size: SH
  6. Remove the 2 fasteners retaining the BCM to the hinge pillar.
  7. Remove the BCM from the hinge pillar by unlocking the integral tab.
  8. Remove the BCM from the vehicle.

Installation Procedure

    Object Number: 1283835 Size: SH
  1. Position the BCM to the vehicle.
  2. Attach the BCM to the hinge pillar with the integral tab.
  3. Install the 2 fasteners retaining the BCM to the hinge pillar.

    4. Object Number: 1283832 Size: SH
  4. Install the fastener retaining the body wiring harness electrical connector to the BCM.

    5. Object Number: 1283827 Size: SH
  5. Connect the body wiring harness electrical connector (1) to the BCM.

    6. Object Number: 1283829 Size: SH
  6. Connect the I/P wiring harness electrical connector (1) to the BCM.
  7. Install the right front hinge pillar trim panel. Refer to Body Hinge Pillar Trim Panel Replacement - Right Side in Interior Trim.
  8. If installing a replacement BCM, program the BCM. Refer to Body Control Module (BCM) Programming/RPO Configuration .