OnStar

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Low-Profile Tires
If the vehicle has P235/50R18, 245/45ZR19, P245/45R19, 255/40ZR19, P265/45R18, 275/40ZR19 or 285/35ZR19 size tires, they are classified as low–profile tires. These tires are designed for v ...

Fuel System Messages
FUEL LEVEL LOW This message displays when the vehicle is low on fuel. Refuel as soon as possible TIGHTEN GAS CAP This message displays when the fuel cap is not on tight. Tighten the fuel ca ...

Glass Replacement
If the windshield or front side glass must be replaced, see your dealer to determine the correct replacement glass. ...