For 1990-2009 cars

## Communication Interface Module Replacement Sedan

### Removal Procedure

1. The vehicle communication interface module (VCIM) is located on the rear trunk packaging shelf on the right side of the vehicle.

Disconnect the 2 connectors from the VCIM.

2. Disconnect the cellular antenna coax cable.
3. Disconnect the global positioning system (GPS) antenna coax cable.
4. Pull down on the 2 tabs and slide the VCIM toward the center of vehicle.

### Installation Procedure

1. Slide the VCIM into the bracket.
2. Connect the GPS antenna coax cable.
3. Connect the wiring connectors.
4. Connect the cellular antenna coax cable

Important: After replacing the VCIM, you must reconfigure the OnStar® 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® system. This action will cause a DTC to set.

5. Install the scan tool. Use the special functions menu in order to perform the OnStar® setup procedure for this vehicle.
6. 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.
7. Use the ID information menu on the scan tool to access the new station ID (STID) and the electronic serial number (ESN) for the new VCIM.
8. Press the blue OnStar® button to connect to the OnStar® Call Center and perform the following procedure:

8.1. | Tell the advisor that this vehicle has received a new VCIM.

8.2. | Ask the advisor to add the new STID and the ESN to update the customer account.

8.3. | Follow any additional instructions from the OnStar® advisor.

8.4. | Ask the advisor to activate the OnStar® Personal Calling feature, if available.

## Communication Interface Module Replacement Wagon

### Removal Procedure

1. The vehicle communication interface module (VCIM) is located on the rear trunk packaging shelf on the right side of the vehicle.

Disconnect the 2 connectors from the VCIM.

2. Disconnect the global positioning system (GPS) antenna coax cable.
3. Disconnect the cellular antenna coax cable.
4. Remove 3 push pins and lift the VCIM module

### Installation Procedure

1. Install the VCIM module and secure the module with 3 push pins.
2. Connect the cellular antenna coax cable.
3. Connect the GPS antenna coax cable.
4. Connect the wiring connectors.

Important: After replacing the VCIM, you must reconfigure the OnStar® 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® system. This action will cause a DTC to set.

5. Install the scan tool. Use the special functions menu in order to perform the OnStar® setup procedure for this vehicle.
6. 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.
7. Use the ID information menu on the scan tool to access the new station ID (STID) and the electronic serial number (ESN) for the new VCIM.
8. Press the blue OnStar® button to connect to the OnStar® Call Center and perform the following procedure:

8.1. | Tell the advisor that this vehicle has received a new VCIM.

8.2. | Ask the advisor to add the new STID and the ESN to update the customer account.

8.3. | Follow any additional instructions from the OnStar® advisor.

8.4. | Ask the advisor to activate the OnStar® Personal Calling feature, if available.