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:

    Check Engine Light
    A computer system called OBD II (On-Board Diagnostics-Second Generation) monitors operation of the fuel, ignition, and emission control systems. It ensures that emissions are at acceptable levels ...

    Cruise Control Messages
    CRUISE SET TO XXX This message displays when the cruise control is set and shows the speed it was set to. See Cruise Control for more information. ...

    Power Reclining Seatbacks
    Driver’s Seat with Power Seat Control, Power Recline, and Power Lumbar shown If the seats have power reclining seatbacks, the controls used to operate them are located on the outboard side ...