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.

    See also:

    Hydraulic Power Steering (3.0L V6 Engine)
    If power steering assist is lost due to a system malfunction, the vehicle can be steered, but may require increased effort. ...

    Manual Lumbar
    Manual Lumbar If equipped, increase or decrease manual lumbar support by turning the knob forward or rearward. ...

    When to Change Engine Oil
    This vehicle has a computer system that indicates when to change the engine oil and filter. This is based on a combination of factors which include engine revolutions, engine temperature, and miles dr ...