Gasoline Specifications (U.S. and Canada Only)

GMC Sierra / GMC Sierra Owners Manuals / Driving and Operating / Fuel / 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 on page 9‑75 for additional information.

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    All-Wheel Drive
    It is not necessary to check the all-wheel drive lubricant levels. A fluid leak is the only reason for fluid loss. If a leak occurs, take the vehicle to the dealer as soon as possible. ...

    Child Restraint Systems
    (A) Rear-Facing Infant Seat A rear-facing infant seat (A) provides restraint with the seating surface against the back of the infant. The harness system holds the infant in place and, in a crash, ...

    Rear Window Defogger
    For vehicles with a rear window defogger, a warming grid is used to remove fog from the rear window. (Rear): Press to turn the rear window defogger on or off. An indicator light on the button comes ...