LEMON Manuals: Even more car manuals for everyone
Home >> GMC >> 2001 >> C3500 HD 6.5 F, Standard >> Repair and Diagnosis >> Accessories & Equipment >> Entertainment Systems >> Cellular Communication System >> Repair Instructions >> OnStar Vehicle Interface Unit Replacement >> Installation Procedure

Installation Procedure

  1. Record the 10-digit STID number from the label on the new module.
  2. Fig 1: VIU Screws
    GM661489Courtesy of GENERAL MOTORS COMPANY
  3. Install the VIU to the bracket.
  4. Connect the electrical connectors.
  5. 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).

  6. Install the I/P trim panel. Refer to Instrument Panel Upper Trim Pad Replacement .
  7. 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.

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