If your vehicle has the 6.0L V8 engine
(VIN Code N), use premium unleaded gasoline
with a posted octane rating of 91 or higher.
You may also use regular unleaded gasoline rated
at 87 octane or higher, but your vehicle’s
acceleration may be slightly reduced, and you
may notice a slight audible knocking noise,
commonly referred to as spark knock. If the octane
is less than 87, you may notice a heavy knocking
noise when you drive. If this occurs, use a
gasoline rated at 87 octane or higher as soon as
possible. Otherwise, you might damage your
engine. If you are using gasoline rated at
87 octane or higher and you hear heavy knocking,
your engine needs service.
Gasoline Specifications
At a minimum, gasoline should meet ASTM
specification D 4814 in the United States or
CAN/CGSB-3.5 in Canada. Some gasolines may
contain an octane-enhancing additive called
methylcyclopentadienyl manganese tricarbonyl
(MMT). General Motors recommends against the
use of gasolines containing MMT. See
Additives
on page 472
for additional information.
California Fuel
If your vehicle is certified to meet California
Emissions Standards, it is designed to operate on
fuels that meet California specifications. See the
underhood emission control label. If this fuel is not
available in states adopting California emissions
standards, your vehicle will operate satisfactorily on
fuels meeting federal specifications, but emission
control system performance may be affected. The
malfunction indicator lamp may turn on and your
vehicle may fail a smog-check test. See
Malfunction
Indicator Lamp on page 258
. If this occurs, return to
your authorized GM dealer for diagnosis. If it is
determined that the condition is caused by the type
of fuel used, repairs may not be covered by your
warranty.
471
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...