WARNING: This page is about a different car, the 2004 Pontiac Grand Prix. 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 communication interface module screws.
The communication interface module is located forward of the floor console and under the instrument panel. There are two screws on the passenger side and one toward the driver side.

Fig 1: View Of Vehicle Communication Interface Module

Courtesy of GENERAL MOTORS CORP.

Disconnect the mobile telephone antenna cable from the communication interface module by pulling outward on the square plastic housing.
Disconnect the electrical connectors.

Fig 2: View Of Communication Interface Module Electrical Connectors

Courtesy of GENERAL MOTORS CORP.

Disconnect the navigation antenna coaxial antenna cable from the module.
Remove the communication interface module.

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.

Safety Warning

Removal Procedure

Use the Manual With the Right Hardware

When to See a Mechanic

Rather have a pro handle this?