Removal Procedure
- Disconnect the battery ground cable.
- Position the seat to the most rearward position.
- Disconnect two vehicle communication interface module electrical connectors (1).
- Disconnect the cellular antenna and the navigation radio antenna connectors (1).
- Position the seat to the most forward position.
- Remove 3 vehicle communication interface module retaining nuts.
- Remove the vehicle communication interface module from the vehicle.
Caution: Refer to Battery Disconnect Caution in the Preface section.
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.
Installation Procedure
- Position the VCIM in the vehicle.
- Install the nuts (1).
- Position the seat to the most rearward position.
- Connect the cellular antenna and the navigation radio antenna connectors (1).
- Connect two vehicle communication interface module electrical connectors (1).
- Connect the battery ground cable.
- Reconfigure the OnStar® system. Refer to Control Module References for programming and setup information.
Notice: Refer to Fastener Notice in the Preface section.
Tighten
Tighten the nuts (1) to 4 N·m (36 lb in).
Caution: Refer to Battery Disconnect Caution in the Preface section.
Important: If replacing the vehicle communication interface module, you must reconfigure the OnStar® system.
