Gasoline Specifications

At a minimum, gasoline should meet ASTM specification D 4814 in the United States or CAN/CGSB-3.5 or 3.511 in Canada. Some gasolines contain an octane-enhancing additive called methylcyclopentadienyl manganese tricarbonyl (MMT). We recommend against the use of gasolines containing MMT. See Additives for additional information.

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    Navigation
    This display is used for the OnStar or Navigation System Turn-by-Turn guidance. See OnStar Overview or the navigation manual, if the vehicle has navigation, for more information. ...

    Power Seat Adjustment
    To adjust the power driver seat, if equipped: Move the seat forward or rearward by sliding the control forward or rearward. Raise or lower the front part of the seat cushion by moving the fron ...

    Airbag Readiness Light
    The system checks the airbag’s electrical system for possible malfunctions. If the light stays on it indicates there is an electrical problem. The system check includes the airbag sensor, the ...