Cellular and GPS Antennas

Avoid placing items over or near the antenna to prevent blocking cellular and GPS signal reception. Cellular reception is required for OnStar to send remote signals to the vehicle.

    See also:

    StabiliTrak® Indicator Light
    This warning light should come on briefly when the engine is started. During most driving conditions, this light will not come on. If the StabiliTrak® System is actively controlling the sta ...

    COOLANT LEVEL LOW ADD COOLANT
    This message will display if the coolant is low. See Engine Coolant. ...

    Weight Distributing Hitches and WeightCarrying Hitches
    When using a weight-distributing hitch, the hitch must be adjusted so the distance (A) remains the same both before and after coupling the trailer to the tow vehicle. If you use a step-bumper hi ...