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Home >> Chevrolet >> 2006 >> TrailBlazer 5.3 M, 4WD >> Repair and Diagnosis >> External Pages >> Different car >> Section 162 (Cellular System, Entertainment System, And Navigation System) >> Repair Instructions >> Communication Interface Module Replacement (TrailBlazer EXT, Envoy XL) >> Removal Procedure

Removal Procedure

WARNING: This page is about a different car, the 2007 Isuzu Ascender, 2007 GMC Envoy, 2007 Chevrolet TrailBlazer, and 2007 Buick Rainier. However, it is still accessible from the selected car via links, so may be relevant.
    IMPORTANT: Do not exchange the vehicle communication interface module with other vehicles. Each vehicle communication interface module has a specific station identification (STID) and electronic serial number (ESN). These identification numbers are stored in the General Motors vehicle history files by VIN and used by OnStar® and the National Cellular Telephone Network.
  1. Fold and tumble the right second row seat to a cargo position.
    2. Fig 1: View Of Protective Cover Removed From (VCIM)
    GM822398Courtesy of GENERAL MOTORS CORP.
  2. Remove the protective cover (1) from the vehicle communication interface module (VCIM).
    3. Fig 2: Identifying VCIM Retaining Tab
    GM829399Courtesy of GENERAL MOTORS CORP.
  3. Remove the VCIM from the bracket by releasing the retaining tab (1).
  4. Remove the electrical connectors from the VCIM.
  5. Remove the VCIM from the vehicle.
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