Removal Procedure

WARNING: This page is about a different car, the 2009 GMC Envoy and 2009 Chevrolet TrailBlazer. However, it is still accessible from the selected car via links, so may be relevant.

NOTE: 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.

Position the right rear seat bottom to a cargo position.

Fig 1: View Of Communication Interface Module (VCIM) Protective Cover

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Remove the protective cover from the VCIM.

Fig 2: Releasing Module Retaining Tab

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Remove the module from the upper bracket by releasing the retaining tab.

Fig 3: Identifying VCIM Electrical Connectors

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Remove the electrical connectors from the VCIM.
Remove the VCIM from the vehicle.