GM Service Manual Online
For 1990-2009 cars only
Makes 🢒 Chevrolet 🢒 2005 🢒 Uplander Ext. 🢒 Vehicle Control Systems 🢒 Vehicle DTC Information 🢒 Communication Interface Module Replacement

Removal Procedure

    Object Number: 802311 Size: SH

    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 (STID) and the 11-digit electronic serial number (ESN), 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. Remove the windshield garnish molding. Refer to Windshield Pillar Garnish Molding Replacement .
  2. Remove the upper trim pad. Refer to Upper Trim Pad, Outer Trim Cover, Fuse Block Access Cover Replacement - Instrument Panel .
  3. Remove the bolt holding the locking strap which secures the VCIM to the bracket.
  4. Disconnect the electrical connectors.
  5. Disconnect the cell antenna coaxial cable from the VCIM.

    6. Important: Return the old VCIM for core credit.

  6. Remove the VCIM from the bracket and from the vehicle.

Installation Procedure
  1. When replacing a VCIM, record the 11-digit ESN and the 10-digit STID number from the label on the new VCIM.

    2. Notice: Refer to Fastener Notice in the Preface section.


    Object Number: 802311 Size: SH
  2. Install the VCM to the bracket using the clip strap and tighten the bolt.

    3. Tighten
    Tighten the bolt to 10 N·m (89 lb in).

  3. Connect the electrical connectors.
  4. Connect the cell antenna coaxial cable to the VCIM.
  5. Install the upper trim pad. Refer to Upper Trim Pad, Outer Trim Cover, Fuse Block Access Cover Replacement - Instrument Panel .
  6. Install the windshield garnish molding. Refer to Windshield Pillar Garnish Molding Replacement .

    7. Important: After replacing the vehicle communication interface module, you must configure the OnStar® system. Failure to configure 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.

  7. Reconfigure the OnStar® system. Refer to OnStar Reconfiguration .