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:

    Lockout Protection
    This feature protects you from locking the key in the vehicle when the key is in the ignition and a front door is open. If the driver side power door lock switch is pressed when the driver door is op ...

    Auxiliary Devices
    For vehicles equipped with the MyLink or IntelliLink infotainment system, see the separate MyLink/ IntelliLink Features and Functions Guide for more information. This vehicle has an auxiliary input ...

    Battery Replacement
    Replace the battery if the REPLACE BATTERY IN REMOTE KEY message displays in the DIC. Notice: When replacing the battery, do not touch any of the circuitry on the transmitter. Static from your body ...