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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    Driving in Mud, Sand, Snow, or Ice
    When you drive in mud, snow, or sand, the wheels will not get good traction. You cannot accelerate as quickly, turning is more difficult, and you will need longer braking distances. It is best t ...

    Engine Coolant Temperature Warning Light
    For eAssist vehicles, this light comes on briefly while starting the vehicle. If it does not, have the vehicle serviced by the dealer. If the system is working normally, the indicator lig ...

    StabiliTrak® OFF Light
    This light comes on when the StabiliTraK system is turned off. If the Traction Control System (TCS) is off, wheel spin is not limited. If StabiliTrak is off, the system does not assist in controll ...