Removal Procedure

Fig 1: Identifying Vehicle Communication Interface Module Electrical Connectors

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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 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.

CAUTION: Refer to Battery Disconnect Caution in Cautions and Notices.

Disconnect the battery ground cable.
Position the seat to the most rearward position.
Disconnect two vehicle communication interface module electrical connectors (1).

Fig 2: Identifying Cellular Antenna And Navigation Radio Antenna Connectors

Courtesy of GENERAL MOTORS CORP.

Disconnect the cellular antenna and the navigation radio antenna connectors (1).

Fig 3: Positioning Vehicle Communication Interface Module

Courtesy of GENERAL MOTORS CORP.

Position the seat to the most forward position.
Remove 3 vehicle communication interface module retaining nuts.
Remove the vehicle communication interface module from the vehicle.