Bonneville V8-4.6L VIN Y (2004)
Global Positioning System Module: Service and Repair
COMMUNICATION INTERFACE MODULE REPLACEMENT
REMOVAL PROCEDURE
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(R) 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.
1. Remove the rear compartment trim.
2. Disconnect the antenna (3) and electrical connections (2) from the vehicle communication interface module (VCIM).
3. Remove the bolts (1) securing the VCIM.
4. Remove the vehicle VCIM from the vehicle.
INSTALLATION PROCEDURE
1. When replacing the VCIM, record the 11-digit electronic serial number (ESN) and the 10-digit station identification (STID) number from the label
on the new VCIM (4).
2. Position the VCIM in the vehicle.
NOTE: Refer to Fastener Notice in Service Precautions.
3. Install the bolts (1).
Tighten
Tighten the bolts (1) to 4 N.m (36 lb in).
4. Connect the antenna cable (2) and electrical connections (3) to the VCIM (4).
5. Install the rear compartment trim.
