GM Service Manual Online
For 1990-2009 cars only
Makes 🢒 Isuzu 🢒 2003 🢒 Ascender - 2WD 🢒 Body and Accessories 🢒 Cellular Communication 🢒 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® 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. Fold and tumble the right second row seat to a cargo position.

    2. Object Number: 822398 Size: SH
  2. Remove the protective cover (1) from the vehicle communication interface module (VCIM).

    3. Object Number: 829399 Size: SH
  3. Remove the VCIM from the bracket by releasing the retaining tab (1).
  4. Remove the electrical connectors from the VCIM.
  5. Remove the VCIM from the vehicle.

Installation Procedure
  1. If replacing the VCIM, record the 10-digit STID number, and the 11-digit ESN number from the labels on the new module.
  2. Position the VCIM near the mounting location.

    3. Object Number: 828622 Size: SH
  3. Install the quick connector to the VCIM.

    4. Object Number: 822397 Size: SH
  4. Install the remaining electrical connectors to the VCIM.
  5. Install the VCIM (1) to the bracket.

    6. Object Number: 829399 Size: SH
  6. Ensure that the retaining tab (1) is fully seated.

    7. Object Number: 822398 Size: SH
  7. Install the protective cover (1) to the module.
  8. Position the right second row seat to a passenger position.

    9. Important: After replacing the vehicle communication interface module, 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.

  9. Install the scan tool. Use the special functions menu in order to perform the OnStar® setup procedure for this vehicle.
  10. 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.
  11. 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.
  12. Press the blue OnStar® button to connect to the OnStar® Call Center and perform the following procedure:
    13. 12.1. Tell the advisor that this vehicle has received a new VCIM.
    12.2. Ask the advisor to add the new STID and the ESN to update the customer's account.
    12.3. Follow any additional instructions from the OnStar® advisor.
    12.4. Ask the advisor to activate the OnStar® Personal Calling feature, if available.
  13. The default language for voice recognition in the generation 5 OnStar® module is English. To change the language resident in the module, refer to Service Programming System (SPS) in Programming.