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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    Manual Seats
    Manual Seats A. Seat Adjustment Handle B. Driver Seat Height Adjustment Lever C. Seatback Lever To adjust a manual seat: 1. Lift the handle (A) under the seat to unlock it. 2. Slide the seat ...

    Retained Accessory Power (RAP)
    These vehicle accessories can be used for up to 10 minutes after the ignition key is turned off: • Audio System • Power Windows • Sunroof (if equipped) Power to the windows and sunroof will ...

    Recommended Transfer Case Settings
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