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Home >> GMC >> 2002 >> Jimmy 2D Utility, Part Time, Automatic >> Repair and Diagnosis >> External Pages >> Different car >> Section 710 (Cellular Communication System) >> Repair Instructions >> OnStar® Vehicle Communication Unit (VCU) Replacement >> Installation Procedure

Installation Procedure

WARNING: This page is about a different car, the 2002 GMC Sierra, 2002 GMC Cab & Chassis Sierra, 2002 Chevrolet Silverado, and 2002 Chevrolet Cab & Chassis Silverado. However, it is still accessible from the selected car via links, so may be relevant.
  1. Record the 11-digit ESN from the label on the new VCU module.
    NOTE: In order to avoid damage to the circuit board, do NOT over-tighten the thumb screws. Using your fingers, apply only a light pressure.
  2. Install the VCU to the bracket.
  3. Connect the electrical connectors to the VCU.
  4. Install the screw. Tighten the screw to 9 N.m (80 lb in).
  5. Install the IP cluster harness.
  6. Install the IP trim panel. Refer to TRIM PANEL REPLACEMENT - INSTRUMENT PANEL (I/P) UPPER .
  7. Press and hold the "end call" button, which is a black button with a white dot. The OnStar® status light will change from green to red to green.
  8. Contact the OnStar® Dealer support line by pressing the blue OnStar® button twice. The 11-digit ESN number will be needed by the OnStar® advisor.
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