Installation procedure

WARNING: This page is about a different car, the 2004 Cadillac CTS. However, it is still accessible from the selected car via links, so may be relevant.

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.
Reconnect the electrical connectors the module.

Fig 1: Identifying Communication Interface Module Connectors
Courtesy of GENERAL MOTORS CORP.

NOTE: Refer to Fastener Notice in Cautions and Notices.

Fig 2: Identifying Communication Interface Module Nuts

Courtesy of GENERAL MOTORS CORP.

IMPORTANT: 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 keypad will NOT reset this version of the OnStar® system. This action will cause a DTC to set.

Install the module onto the vehicle.
Tighten: Tighten the nuts to 9 N.m (80 lb in).
Reconfigure the OnStar® system. Refer to OnStar Reconfiguration .