Diagnostics

OnStar Vehicle Diagnostics will perform a vehicle check every month. It will check the engine, transmission, antilock brakes, and major vehicle systems. It also checks the tire pressures, if the vehicle is equipped with the Tire Pressure Monitoring System. If a diagnostics check is needed between e-mails, push OnStar Additional Information , and an Advisor can run a check.

    See also:

    USB Port
    For vehicles with a USB port, the following devices may be connected and controlled by the infotainment system: ► iPods ► PlaysForSure Devices (PFD) ► USB Drives ► Zunes ...

    Hydraulic Clutch
    For vehicles with a manual transmission, it is not necessary to regularly check brake/clutch fluid unless there is a leak suspected. Adding fluid will not correct a leak. A fluid loss in this system ...

    Making a Call
    Calls can be made using the following commands: ► Dial ► Digit Dial ► Call ► Re-dial ...