STS RWD V8-4.6L VIN A (2006)
Global Positioning System Module: Service and Repair
COMMUNICATION INTERFACE MODULE REPLACEMENT
REMOVAL PROCEDURE
1. Remove the right rear compartment trim.
IMPORTANT: The communication interface module (CIM) 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.
2. Remove the nuts (2) securing the module (1) to the vehicle body.
3. Disconnect all the electrical connectors from the module.
4. Remove the module from the vehicle.
INSTALLATION PROCEDURE
1. When replacing the CIM, record the 11-digit electronic serial number (ESN) and the 10-digit station identification (STID) number from the label
on the new CIM.
2. Reconnect the electrical connectors the module.
3. Install the module onto the vehicle.
