OnStar Description and Operation

The OnStar(R) system on this vehicle will be one of two systems, Generation 2.6 or Generation F1. Both Systems use a navigation antenna, cellular antenna, cellular microphone and OnStar(R) button assembly. Each system also interfaces with the vehicle audio system. To determine which system this vehicle is equipped with, install a scan tool and access the Module 3, Module I.D. Information screen on the scan tool. The differences between the 2 systems are described in the following:
^ The OnStar(R) Generation 2.6 interfaces with the vehicle operating system by means of 2 modules, the Vehicle Interface Unit (VIU) and the Vehicle Communication Unit (VCU). This system provides the customer with impact detection, navigation instructions, emergency services, stolen vehicle tracking and recovery service, roadside assistance, door lock and unlock, horn pulse, light flash, and remote diagnostics. In addition, a hands free cellular phone is available with the existing OnStar(R) components, as an optional feature to the customer.
^ The OnStar(R) Generation F1 interfaces with the vehicle operating system by means of a single module, the Vehicle Communication Interface Module (VCIM), and provides all the same features as the 2.6 system.