Removal and Replacement

Body Control Module Replacement

Removal Procedure

1. Disconnect the negative battery cable.
2. Remove the front floor console.




3. Remove the wiring harness rosebud from the right center support bracket.




4. Pull back the carpet at the bottom of the support bracket and remove the lower nuts.
5. Remove the nuts and remove the bracket.




6. Disconnect the small body harness connector (1) from the body control module (BCM).
7. Disconnect the large body harness connector (2) from the BCM.




8. Disconnect the small instrument panel (I/P) wiring harness connector (1) from the BCM.
9. Disconnect the large I/P wiring harness connector (2) from the BCM.
10. If equipped with OnStar(R), disconnect the OnStar(R) connector.




11. Remove the BCM nuts and remove the BCM from the vehicle.

Installation Procedure






Notice: Refer to Fastener Notice.

1. Install the BCM to the vehicle and install the retaining nuts.

Tighten the nuts to 10 N.m (88 lb in).




2. Connect the large I/P wiring harness connector (2) to the BCM.
3. Connect the small I/P wiring harness connector (1) to the BCM.




4. Connect the large body wiring harness connector (2) to the BCM.
5. Connect the small body wiring harness connector (1) to the BCM.
6. Connect the OnStar(R) connector.




7. Pull back the carpet and position the center support bracket into position.
8. Install the center support bracket nuts.

Tighten the nuts to 10 N.m (88 lb in).




9. Install the wiring harness rosebud to the center support bracket.
10. Install the front floor console.
11. Connect the negative battery cable.
12. Program a new or a remanufactured BCM. Refer to Control Module References. Programming and Relearning