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 598
.
If your vehicle has the 5.3L V8 engine
(VIN Code Z only), you may use either regular
unleaded gasoline or ethanol fuel containing up to
85% ethanol (E85); also see
Fuel on page 470
.
In all other engines, use only the unleaded
gasoline described under
Gasoline Octane on
page 470
.
Only vehicles that have the 5.3L V8 engine
(VIN Code Z) 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.
To ensure quick starts in the wintertime, the
E85 fuel must be formulated properly for your
climate according to ASTM specification D 5798.
If you have trouble starting on E85, it may be
because your E85 fuel is not properly formulated
for your climate. If this happens, switching to
gasoline or adding gasoline to your fuel tank may
improve starting. For good starting and heater
efficiency below 32°F (0°C), the fuel mix in the fuel
tank should contain no more than 70% ethanol.
It is best not to alternate repeatedly between
gasoline and E85. If you do switch fuels, it
is recommended that you add as much fuel as
possible — do not add less than five gallons
(18.9 L) when refueling. You should drive
the vehicle immediately after refueling for at least
seven miles (11 km) to allow the vehicle to
adapt to the change in ethanol concentration.
473
Summary of Contents for 2007 Sierra 1500 Pickup
Page 6: ...These are some examples of symbols that may be found on the vehicle 6...
Page 24: ...Put someone on it Get it up to speed Then stop the vehicle The rider does not stop 24...
Page 206: ...NOTES 206...
Page 209: ...NOTES 209...
Page 354: ...NOTES 354...
Page 464: ...NOTES 464...
Page 484: ...When you open the hood on the 8 1L V8 engine here is what you will see 484...
Page 604: ...604...
Page 612: ...NOTES 612...
Page 633: ...Engine Drive Belt Routing A Air Conditioning Compressor V6 Engines V8 Engines 633...