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Home >> Chevrolet >> 2001 >> Chevy Express G2500, Van Cargo Extended, 5.0 M >> Repair and Diagnosis >> External Pages >> Different car >> Section 951 (Cellular Communication System) >> Repair Instructions >> OnStar Vehicle Interface Unit Replacement >> Installation Procedure

Installation Procedure

WARNING: This page does not describe the selected car, but rather 10 other vehicles, including the 2001 GMC Yukon XL, 2001 GMC Yukon, 2001 GMC Sierra, 2001 GMC Cab & Chassis Sierra, and 2001 GMC C3500 HD. However, it is still accessible from the selected car via links, so may be relevant.
  1. Record the 10-digit STID number from the label on the new module.
    2. Fig 1: VIU Screws
    GM661489Courtesy of GENERAL MOTORS COMPANY
  2. Install the VIU to the bracket.
  3. Connect the electrical connectors.
  4. Refer to Fastener Notice .

    Install the 2 screws (1) securing the VIU to the bracket.

    Tighten 

    Tighten the screws to 9 N.m (80 lb in).

  5. Install the I/P trim panel. Refer to Instrument Panel Upper Trim Pad Replacement .
    6. IMPORTANT:

    After replacing the VIU, you must reconfigure the OnStar® system. Failure to reconfigure the system will result in an additional customer visit for repair.

  6. Reconfigure the OnStar® system. Refer to OnStar Reconfiguration (Without TIS 2 Web Gen.3 and prior) .
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