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 Advisor can run a check., and an Advisor can run a check.

    See also:

    California Fuel Requirements
    If the vehicle is certified to meet California Emissions Standards, it is designed to operate on fuels that meet California specifications. See the underhood emission control label. If this fuel i ...

    DIC Warnings and Messages
    Messages are displayed on the DIC to notify the driver that the status of the vehicle has changed and that some action may be needed to correct the condition. Multiple messages may appear one afte ...

    Interior Lighting
    Dome Lamps The interior lamps control located in the overhead console controls both the front and rear interior lamps. : Turns the lamps off. : Turns the lamps on when any door is opened. : Keeps ...