Central Control Module: Service and Repair

Communication Interface Module Replacement

Removal Procedure






Important: The vehicle communication interface module (VCIM) has a specific set of unique numbers that tie the module to each vehicle. These numbers, the 10-digit station identification and the 11-digit electronic serial number, are used by the National Cellular Network and OnStar(R) to identify the specific vehicle. Because these numbers are tied to the vehicle identification number of the vehicle, you must never exchange these parts with those of another vehicle.

1. Remove the right rear compartment trim.
2. Remove the nuts securing the OnStar(R) module to the vehicle body.




3. Disconnect all the electrical connectors from the module.
4. Remove the module from the vehicle.

Installation procedure




1. When replacing the VCIM, record the 11-digit electronic serial number (ESN) and the 10-digit station identification (STID) number from the label on the new VCIM.
2. Reconnect the electrical connectors the module.






Notice: Refer to Fastener Notice.

3. Install the module onto the vehicle.

Tighten the nuts to 9 N.m (80 lb in).

Important: After replacing the vehicle communication interface module, you must reconfigure the OnStar(R) system. Failure to reconfigure the system will result in an additional customer visit for repair. In addition, pressing and holding the white dot button on the keypad will NOT reset this version of the OnStar(R) system. This action will cause a DTC to set.

4. Install the scan tool. Use the special functions menu in order to perform the OnStar(R) setup procedure for this vehicle.
5. Move the vehicle to an open area that is away from tall buildings and with a clear view of unobstructed sky. Allow the vehicle to run for 10 minutes.
6. Use the ID information menu on the scan tool to access the new station ID (STID) and the electronic serial number (ESN) from the new VCIM.
7. Press the blue OnStar(R) button to connect to the OnStar(R) Call Center and perform the following procedure:

1. Tell the advisor that this vehicle has received a new VCIM.
2. Ask the advisor to add the new STID and the ESN to update the customer's account.
3. Follow any additional instructions from the OnStar(R) advisor.
4. Ask the advisor to activate the OnStar(R) Personal Calling feature, if available.

8. The default language for the new VCIM is English. Refer to the Module Setup screen if the customer requests French or Spanish Voice Recognition.
9. Refer to Programming and Relearning Programming and Relearning