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 methylcyclopentadienyl manganese tricarbonyl (MMT). We recommend against the use of gasolines containing MMT. See Fuel Additives  for additional information.

    See also:

    Lamp Messages
    AFL (Adaptive Forward Lighting) LAMPS NEED SERVICE This message displays when the Adaptive Forward Lighting (AFL) system is disabled and needs service. See your dealer. See Adaptive Forwa ...

    Listing Stored Numbers
    The list command will list all the stored numbers and name tags. Using the “List” Command 1. Press . The system responds “Ready,” followed by a tone. 2. Say “Directory.” 3. Say “Ha ...

    Using Voice Commands During a Planned Route
    Cancel Route 1. Push . System responds: “OnStar ready,” then a tone. Say “Cancel route.” System responds: “Would you like to cancel route directions to your destination?”. 2. Sa ...