Global Positioning System Module: Service and Repair
COMMUNICATION INTERFACE MODULE REPLACEMENTREMOVAL PROCEDURE
1. Remove the rear compartment trim.
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.
- This vehicle may be equipped with line of two versions of the OnStar(R) System. Early production vehicles will have the generation 4 module. Later productions will have the generation 5 module. The two modules can not be interchanged. The generation 4 module can be identified by the use of three connector cavities. The generation 5 module uses four connector cavities.
2. Remove the electrical component mounting bracket nuts (2).
3. Carefully pull the electrical component mounting bracket (1) away from the body, so that the cross car brace is visible.
NOTE: DO NOT completely remove the electrical component mounting bracket until the GPS antenna cable is removed from the cross car brace. Failure to do so may result in damage to the GPS connector.
4. Remove the GPS antenna cable (1) from the cross car brace.
5. Place the electrical component mounting bracket (2) module side up in the rear compartment.
6. Release the vehicle communication interface module (VCIM) (3) retaining tab (2).
7. Slide the vehicle VCIM (3) out of the electrical component mounting bracket (1).
8. Disconnect the antenna and electrical connections from the VCIM (3).
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 (1).
2. Connect the antenna cable and electrical connections to the VCIM (1).
3. Slide the VCIM (1) into the electrical component mounting bracket (3).
4. Push in on the top of the VCIM (1) until an audible click is heard, indicating the retaining tab (2) has securely fastened the VCIM (1) to the electrical component mounting bracket (3).
5. Partially install the electrical component mounting bracket (1) to the vehicle body.
6. Attach the GPS antenna cable (1) to the cross car brace.
7. Install the electrical component mounting bracket (1) to the studs.
8. Install the electrical component mounting bracket nuts.
NOTE: Refer to Fastener Notice in Service Precautions.
Tighten
Tighten the nuts (2) to 9 N.m (80 lb in).
9. Install the rear compartment trim.
10. Install the scan tool. Use the special functions menu in order to perform the OnStar(R) setup procedure for this vehicle.
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.
11. 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.
12. 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.
13. Press the blue OnStar(R) button to connect to the OnStar(R) Call Center and perform the following procedure:
13.1. Tell the advisor that this vehicle has received a new VCIM.
13.2. Ask the advisor to add the new STID and the ESN to update the customer's account.
13.3. Follow any additional instructions from the OnStar(R) advisor.
13.4. Ask the advisor to activate the OnStar(R) Personal Calling feature, if available.
14. Voice recognition in the generation 4 module can NOT be changed. The default language for voice recognition in the generation 5 OnStar(R) module is English. To change the language resident in the module, refer to Service Programming System (SPS) (Remote Procedure)Service Programming System (SPS) (Pass-Thru Procedure)Service Programming System (SPS) (Off Board Remote Procedure)Service Programming System (SPS) (Off Board Pass-Thru Procedure) in Programming. Programming and Relearning