Vehicle and Power Issues

OnStar services require a vehicle electrical system, wireless service, and GPS satellite technologies to be available and operating for features to function properly. These systems may not operate if the battery is discharged or disconnected.

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    Electric Parking Brake Light
    For vehicles with the Electric Parking Brake (EPB), this light should come on briefly as the engine is started. If it does not come on, have the vehicle serviced by your dealer. The parking b ...

    Lamps On Reminder
    This light comes on whenever the parking lamps are on. See Exterior Lamps Off Reminder for more information. ...

    Cruise Control
    Cruise Control Shown with Heated Steering Wheel Button (If Equipped) The cruise control buttons are located on the left side of the steering wheel. : Press to turn the system on or off. The indi ...