Fuel System Messages

FUEL LEVEL LOW

This message displays and a chime sounds if the fuel level is low. Refuel as soon as possible. See Fuel Gauge   and Fuel   for more information.

TIGHTEN GAS CAP

This message may display along with the check engine light on the instrument panel cluster if the fuel cap is not tightened properly. See Malfunction Indicator Lamp  . Reinstall the fuel cap fully. See Filling the Tank  . The diagnostic system can determine if the fuel cap has been left off or improperly installed. A loose or missing fuel cap allows fuel to evaporate into the atmosphere. A few driving trips with the cap properly installed should turn this light and message off.

    See also:

    Fluids
    Proper fluid levels and approved fluids protect the vehicle’s systems and components. See Recommended Fluids and Lubricants for GM approved fluids. - Engine oil and windshield washer fluid ...

    TIRE LEARNING ACTIVE
    This message displays when the Tire Pressure Monitor System (TPMS) is re-learning the tire positions on the vehicle. The tire positions must be re-learned after rotating the tires or after ...

    Privacy
    The complete OnStar Privacy Statement may be found at www.onstar.com. Privacy-sensitive users of wireless communications are cautioned that the privacy of any information sent via wireless c ...