WARNING: This page is about a different car, the 2007 Chevrolet Corvette. However, it is still accessible from the selected car via links, so may be relevant.

Fig 1: View Of Communication Interface Module

Courtesy of GENERAL MOTORS CORP.

Communication Interface Module Replacement (Except Z06)

Callout

Component Name

NOTE: Refer to Fastener Notice .

Fastener Tightening Specifications: Refer to Fastener Tightening Specifications .

Preliminary Procedures

Remove the rear compartment floor panel carpet. Refer to Rear Compartment Floor Panel Carpet Replacement (Convertible) or Rear Compartment Floor Panel Carpet Replacement (Coupe) .
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.

Communication Interface Module Bolt (Qty 3)

NOTE: Refer to Fastener Notice in Cautions and Notices.

Tip: When replacing the VCIM, record the 11-digit ESN and 10-digit STID number from the label on the new VCIM.

Tighten: 2 N.m (18 lb in)

Communication Interface Module Assembly
Tip: After replacing the VCIM, you must reconfigure the OnStar® system. Failure to reconfigure the system will result in an additional customer visit for repair. In addition, pressing and holding the white dot button on the key pad will NOT reset this version of the OnStar® system. This action will cause a DTC to set.
Reconfigure the OnStar® system. Refer to Control Module References for programming and setup information.

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

Communication Interface Module Replacement (Except Z06)

Use the Manual With the Right Hardware

When to See a Mechanic

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