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:

    Infotainment
    Determine which radio the vehicle has and read the following pages to become familiar with its features. WARNING Taking your eyes off the road for extended periods could cause a crash resulting in i ...

    Control of a Vehicle
    Braking, steering, and accelerating are important factors in helping to control a vehicle while driving. ...

    Turning the RVC System On or Off
    To turn the RVC system on or off: 1. Shift into P (Park). 2. Press MENU to enter the configure menu options. Turn the Multifunction knob until the Display feature is highlighted and press the Multif ...