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Home >> Pontiac >> 2002 >> Aztek FWD >> Repair and Diagnosis >> External Pages >> Different car >> Section 1341 (Cellular Communication System) >> Repair Instructions >> OnStar Vehicle Interface Unit (VIU) Replacement >> Removal Procedure

Removal Procedure

WARNING: This page does not describe the selected car, but rather 6 other vehicles, including the 2002 GMC Yukon XL, 2002 GMC Yukon, 2002 Chevrolet Tahoe, 2002 Chevrolet Suburban, and 2002 Cadillac Escalade EXT. However, it is still accessible from the selected car via links, so may be relevant.
    IMPORTANT: The vehicle interface unit (VIU) has a specific set of unique numbers that tie the module to each vehicle. These numbers, the 10-digit station identification and the 11-digit electronic serial number, 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 IP trim panel. Refer to TRIM PANEL REPLACEMENT - INSTRUMENT PANEL (I/P) UPPER .
    2. Fig 1: Removing Screws
    GM661489Courtesy of GENERAL MOTORS CORP.
  2. Remove the 2 screws (1) securing the VIU to the bracket.
  3. Disconnect the electrical connectors.
  4. Remove the VIU from the bracket.
  5. The old VIU must be returned for core credit.
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