Other information:
For diesel engine vehicles, see “Fuel for Diesel Engines” in the Duramax diesel
supplement.
If the vehicle has a yellow fuel cap or a yellow sticker on the fuel door, E85
or FlexFuel can be used. If the vehicle does not have a yellow fuel cap or yellow
sticker, do not use gasoline with ethanol levels greater than 15% by volume...
If equipped, the doors will lock automatically when all doors are closed, the
ignition is on, and the shift lever is moved out of P (Park).
If a vehicle door is unlocked and then opened and closed, the doors will lock
either when your foot is removed from the brake or the vehicle speed becomes faster
than 13 km/h (8 mph)...