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Home >> Cadillac >> 2004 >> Escalade EXT >> Repair and Diagnosis (Single Page) >> Accessories & Equipment >> Entertainment Systems >> Cellular Communication System >> Repair Instructions >> Communication Interface Module Replacement >> Installation Procedure
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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. Ensure the nuts (3) are installed on the module mounting brackets (3).
  3. Install the mounting brackets (2) to the VCIM (1).
    4. NOTE: Refer to Fastener Notice in Cautions and Notices.
    Fig 1: Installing VCIM Mounting Brackets & Nuts
    GM1260485Courtesy of GENERAL MOTORS CORP.
  4. Install the nuts (4).

    Tighten:  Tighten the nuts to 2 N.m (18 lb in).

  5. If necessary, move the cross-car duct forward slightly in order to make room for the installation of the module.
  6. Install the VCIM and bracket assembly to the I/P.
  7. Install the push in retainer.
    Fig 2: Vehicle Communication Interface Module (VCIM) & Bracket Assembly
    GM1260503Courtesy of GENERAL MOTORS CORP.
  8. Install the VCIM screw (1) to the I/P.

    Tighten:  Tighten the screws to 2 N.m (18 lb in).

    Fig 3: Installing VCIM Screw
    GM1260499Courtesy of GENERAL MOTORS CORP.
  9. Install the passenger side upper I/P bracket (2).
  10. Install the I/P upper bracket screws (3).

    Tighten:  Tighten the screws (3) to 2 N.m (18 lb in).

  11. Install the I/P upper bracket screws (1).

    Tighten:  Tighten the screws (1) to 50 N.m (37 lb ft).

    Fig 4: Installing Passenger Side Upper I/P Bracket & Screws
    GM1260587Courtesy of GENERAL MOTORS CORP.
  12. Connect the coaxial cable (3) to the VCIM.
  13. Connect the electrical connectors (2) to the VCIM.
    Fig 5: Connecting Coaxial Cable & Electrical Connectors To VCIM
    GM854863Courtesy of GENERAL MOTORS CORP.
  14. Install the I/P trim panel. Refer to Trim Panel Replacement - Instrument Panel (I/P) Upper in Instrument Panel, Gages and Console.
    15. 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.
  15. Install the scan tool. Use the special functions menu in order to perform the OnStar® setup procedure for this vehicle.
  16. 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.
  17. 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.
  18. Press the blue OnStar® button to connect to the OnStar® 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® advisor.
    4. Ask the advisor to activate the OnStar® Personal Calling feature, if available.
  19. 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.
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