Removal Procedure

WARNING: This page is about a different car, the 2003 GMC Sierra, 2003 GMC Cab & Chassis Sierra, 2003 Chevrolet Silverado, and 2003 Chevrolet Cab & Chassis Silverado. 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 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.

Remove the I/P top trim panel. Refer to TRIM PANEL REPLACEMENT-INSTRUMENT PANEL (I/P) UPPER .
Disconnect the wire connectors (2) from the module.
Disconnect the coaxial cable (3) from the module.

Fig 1: Disconnecting Wire Connectors & Coaxial Cable

Courtesy of GENERAL MOTORS CORP.

Remove the nuts (2) retaining the module to the bracket.
Remove the module (3) from the vehicle.

Fig 2: Removing Retaining Nuts
Courtesy of GENERAL MOTORS CORP.