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:

    Battery Voltage
    This display, available on some vehicles, shows the current battery voltage. If the voltage is in the normal range, the value will display. For example, the display may read Battery Voltage 1 ...

    Audio Output
    Audio from the DVD player or auxiliary inputs may be heard through the following possible sources: • Wireless Headphones • Vehicle Speakers • Vehicle wired headphone jacks on the Rear Sea ...

    Brake Pedal Travel
    See your dealer/retailer if the brake pedal does not return to normal height, or if there is a rapid increase in pedal travel. This could be a sign that brake service might be required. ...