GMC Terrain: Recommended Fuel - Fuel - Driving and Operating - GMC Terrain Owner's ManualGMC Terrain: Recommended Fuel

Use regular unleaded gasoline with a posted octane rating of 87 or higher. If the octane rating is less than 87, an audible knocking noise, commonly referred to as spark knock, might be heard when driving. If this occurs, use a gasoline rated at 87 octane or higher as soon as possible. If heavy knocking is heard when using gasoline rated at 87 octane or higher, the engine needs service.

    Fuel
    Use of the recommended fuel is an important part of the proper maintenance of this vehicle. To help keep the engine clean and maintain optimum vehicle performance, we recommend the use of gasoline ...

    Gasoline Specifications (U.S. and Canada Only)
    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 methylcyclopen ...

    See also:

    Engine Oil Life Display
    To see the current engine oil life, turn the ignition switch to the ON (II) position, then press and release the select/reset knob repeatedly until the engine oil life indicator appears. ...

    Data stored in the vehicle
    Information about electronic data acquisition in the vehicle (Including notice pursuant to California Code § 9951) Your vehicle records electronic data. If your vehicle is equipped with mbrace1, ...

    Other Navigation Services Available from OnStar
    OnStar eNav: Allows subscribers to send destinations from Google Mapsâ„¢ and MapQuest.com to their Turn-by-Turn Navigation or screen-based navigation system. When ready, the directions will be dow ...