2007 Buick LaCrosse V6-3.6LFACTORY OEM SERVICE PROCEDURE

Body Control Module: Service and Repair



Body Control Module Replacement

Removal Procedure

Factory service manual diagram





Notice: Electrostatic discharge (ESD) can damage many solid-state electrical components. ESD susceptible components may or may not be labeled with the ESD symbol. Handle all electrical components carefully. Use the following precautions in order to avoid ESD damage:

* Touch a metal ground point in order to remove your body's static charge before servicing any electronic component; especially after sliding across the vehicle seat.

* Do not touch exposed terminals. Terminals may connect to circuits susceptible the ESD damage.

* Do not allow tools to contact exposed terminals when servicing connectors.

* Do not remove components from their protective packaging until required to do so.

* Avoid the following actions unless required by the diagnostic procedure:

- Jumpering or grounding of the components or connectors.

- Connecting test equipment probes to components or connectors. Connect the ground lead first when using test probes.

* Ground the protective packaging of any component before opening. Do not rest solid-state components on metal workbenches, or on top of TVs, radios, or other electrical devices.

Important: You must perform the new body control module (BCM) setup when replacing the BCM. refer to Body Control Module Programming and Setup.

Remove the left instrument panel (I/P) outer trim cover.

2. Press to release the cam lock. Disconnect the upper electrical connector from the BCM.
3. Remove the left I/P insulator.
4. Remove the knee bolster.

Factory service manual diagram



5. Press to release the cam lock. Disconnect the lower BCM electrical connectors.

Factory service manual diagram



6. Remove the BCM bracket screws and remove the BCM and bracket from the I/P.

Factory service manual diagram



7. Remove the BCM from the BCM bracket.

Installation Procedure

1. Install the BCM to the BCM bracket.

Factory service manual diagram



2. Install the BCM and BCM bracket to the I/P.

Factory service manual diagram




Notice: refer to Fastener Notice.

3. Install the BCM screws.

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

Factory service manual diagram



4. Connect the lower BCM electrical connectors. Engage the cam lock.
5. Install the knee bolster.
6. Install the left I/P insulator.

Factory service manual diagram



7. Connect the upper electrical connector to the BCM. Engage the cam lock.
8. Install the left I/P outer trim cover.
9. Perform the new BCM setup. refer to Control Module References for programming and setup information. Programming and Relearning
Factory Service Tools

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When to See a Mechanic

Stop DIY work and contact a certified mechanic immediately if any of the following apply:

  • β€’ You smell fuel, burning insulation, or see smoke.
  • β€’ Brakes feel soft, pull hard to one side, or make grinding noises.
  • β€’ The engine overheats, stalls repeatedly, or misfires under load.
  • β€’ You are missing required tools, torque specs, or safe lifting equipment.
  • β€’ You are not confident in the next step or safety outcome.

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