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Home >> GMC >> 2002 >> Jimmy 2D Utility, Automatic, Automatic >> Repair and Diagnosis >> External Pages >> Different car >> Section 1580 (Cellular Communication System) >> Repair Instructions >> Communication Interface Module Replacement (TrailBlazer EXT, Envoy XL) >> Installation Procedure
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Installation Procedure

WARNING: This page is about a different car, the 2003 Oldsmobile Bravada, 2003 GMC Envoy XL, 2003 GMC Envoy, and 2003 Chevrolet TrailBlazer. However, it is still accessible from the selected car via links, so may be relevant.
  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. Install the quick connector to the VCIM.
    Fig 1: Positioning VCIM Near Mounting Location
    G01640727Courtesy of GENERAL MOTORS CORP.
  4. Install the remaining electrical connectors to the VCIM.
  5. Install the VCIM (1) to the bracket.
    Fig 2: Installing Remaining Electrical Connectors To VCIM
    G01640728Courtesy of GENERAL MOTORS CORP.
  6. Ensure the retaining tab (1) is fully seated.
    Fig 3: Identifying Retaining Tab Seated Position
    G01640729Courtesy of GENERAL MOTORS CORP.
  7. Install the protective cover (1) to the module.
  8. Position the right second row seat to a passenger position.
    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:
    1. 12.1. Tell the advisor that this vehicle has received a new VCIM.
    2. 12.2. Ask the advisor to add the new STID and the ESN to update the customer's account.
    3. 12.3. Follow any additional instructions from the OnStar® advisor.
    4. 12.4. Ask the advisor to activate the OnStar® Personal Calling feature, if available.
      Fig 4: Installing Protective Cover To Module
      G01640730Courtesy of GENERAL MOTORS CORP.
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