Fuel E85 (85% Ethanol)
The 8th digit of your Vehicle Identification
Number (VIN) shows the code letter or number
that identifies your engine. You will find the VIN at
the top left of the instrument panel. See Vehicle
Identification Number (VIN) on page 394.
If your vehicle has the 3.5L V6 engine (VIN
Code K only), you may use either regular unleaded
gasoline or ethanol fuel containing up to 85%
ethanol (E85); also see Fuel on page 298.Inall
other engines, including the 3.5L V6 (VIN Code N),
use only regular unleaded gasoline.
Only vehicles that have the 3.5L V6 engine
(VIN Code K) may use 85% ethanol fuel (E85).
General Motors encourages the use of E85
in vehicles that are designed to use it. The ethanol
in E85 is a “renewable” fuel, meaning it is made
from renewable sources such as corn and
other crops.
Many service stations will not have an 85% ethanol
fuel (E85) pump available. The U. S. Department
of Energy has an alternative fuels website
(www.eere.energy.gov/afdc/infrastructure/
locator.html) that can help you find E85 fuel. Those
stations that do have E85 should have a label
indicating ethanol content. Do not use the fuel if the
ethanol content is greater than 85%.
At a minimum, E85 should meet ASTM
Specification D 5798. By definition, this means
that fuel labeled E85 will have an ethanol content
between 70% and 85%. Filling the fuel tank
with fuel mixtures that do not meet ASTM
specifications can affect driveability and could
cause the check engine light to come on.
301
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