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:

    Bluetooth Controls
    Use the buttons located on the infotainment system and the steering wheel to operate the Bluetooth system. Steering Wheel Controls (Push To Talk): Press to answer incoming calls, confirm system ...

    Specification
    Use and ask for licensed engine oils with the dexos1™ approved certification mark. Engine oils meeting the requirements for the vehicle should have the dexos™1 approved certification mark. This ce ...

    Lamp Messages
    AUTOMATIC LIGHT CONTROL OFF This message displays when the automatic headlamps are turned off. This message clears itself after 10 seconds. AUTOMATIC LIGHT CONTROL ON This message displays when th ...