Chevrolet Silverado: Fuel / Recommended Fuel (6.2L V8 Engine)

Premium unleaded gasoline meeting ASTM specification D4814 with a posted octane
rating of 93 — (R+M)/2 — is highly recommended for best performance and fuel economy.
Unleaded gasoline with an octane rated as low as 87 can be used. Using unleaded
gasoline rated below 93 octane, however, will lead to reduced acceleration and fuel
economy. If knocking occurs, use a gasoline rated at 93 octane as soon as possible,
otherwise, the engine could be damaged. If heavy knocking is heard when using gasoline
with a 93 octane rating, the engine needs service.
Do not use any fuel labeled E85 or FlexFuel. Do not use gasoline with ethanol
levels greater than 15% by volume.
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...
Caution
Do not use fuels with any of the following conditions; doing so may damage
the vehicle and void its warranty:
For vehicles that are not FlexFuel, fuel labeled greater than 15%
ethanol by volume, such as mid-level ethanol blends (16–50% ethanol), E85, or
FlexFuel...
Other information:
After frontal and seat-mounted side impact airbags inflate, they quickly deflate,
so quickly that some people may not even realize the airbags inflated. Roof-rail
airbags may still be at least partially inflated for some time after they inflate.
Some components of the airbag module may be hot for several minutes...
Warning
Most motor vehicles, including this one, as well as many of its service
parts and fluids, contain and/or emit chemicals known to the State of California
to cause cancer and birth defects or other reproductive harm. Engine exhaust, many
parts and systems, many fluids, and some component wear by-products contain and/or
emit these chemicals...