2006 Hummer H3 AutomaticFACTORY OEM SERVICE PROCEDURE

Removal Procedure

WARNING: This page is about a different car, the 2005 GMC Canyon and 2005 Chevrolet Colorado. However, it is still accessible from the selected car via links, so may be relevant.
    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. Position the right rear seat bottom to a cargo position.
  2. Ensure the ignition switch is in the OFF position.
    3. Fig 1: View Of Right I/P Service Panel
    GM1251728Courtesy of GENERAL MOTORS CORP.
  3. Remove the service panel located on the right side of the instrument panel (I/P).
    4. Fig 2: View Of VCIM Electrical Connectors
    GM1365493Courtesy of GENERAL MOTORS CORP.
  4. Disconnect the VCIM electrical connectors as necessary.
    5. Fig 3: View Of VCIM To Bracket Retaining Screw
    GM1365496Courtesy of GENERAL MOTORS CORP.
  5. Remove the screw retaining the VCIM to the bracket.
    6. Fig 4: View Of Bracket Tab
    GM1367811Courtesy of GENERAL MOTORS CORP.
  6. Release the tab (1) on the bracket.
    7. Fig 5: View Of VCIM & Bracket
    GM1367812Courtesy of GENERAL MOTORS CORP.
  7. Remove the VCIM from the bracket.
    8. Fig 6: View Of VCIM
    GM1367814Courtesy of GENERAL MOTORS CORP.
  8. Remove the VCIM from the vehicle.
Factory Service Tools

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When to See a Mechanic

Stop DIY work and contact a certified mechanic immediately if any of the following apply:

  • • You smell fuel, burning insulation, or see smoke.
  • • Brakes feel soft, pull hard to one side, or make grinding noises.
  • • The engine overheats, stalls repeatedly, or misfires under load.
  • • You are missing required tools, torque specs, or safe lifting equipment.
  • • You are not confident in the next step or safety outcome.

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