Downloaded from www.Manualslib.com manuals search engine The 8th digit of your vehicle identification number
(VIN) shows the code letter for your engine. You will
find the VIN at the top left of your instrument panel.
(See “Vehicle Identification Number” in the Index.)
If
you don’t have the 5.7L Code P engine, use regular
unleaded gasoline rated at 87 octane or higher.
If you have the
5.7L Code P engine, use premium
unleaded gasoline rated at 91 octane or higher for best
performance. You may use middle grade or regular
unleaded gasolines, but your vehicle may not accelerate
as well.
At
a minimum, the gasoline you use should meet
specifications ASTM D4814 in the United States and
CGSB 3.5-M93 in Canada. Improved gasoline
specifications have been developed by the American
Automobile Manufacturers Association (AAMA) for
better vehicle performance and engine protection.
Gasolines meeting the AAMA specification could
provide improved driveability and emission control system protection compared
to other gasolines. Be
sure the posted octane for premium is at least
91
(at least 89 for middle grade and 87 for regular). If the
octane is
less than 87, you may get a heavy knocking
noise when you drive. If it’s bad enough,
it can damage
your engine.
If you’re using fuel rated at the recommended octane or
higher and you still hear heavy knocking, your engine
needs service. But don’t worry if you hear a little
pinging noise when you’re accelerating or driving up a
hill. That’s normal, and you don’t have
to buy a higher
octane fuel to get rid
of pinging. It’s the heavy, constant
knock that means
you have a problem.
If your vehicle is certified
to meet California Emission
Standards (indicated
on the underhood tune-up label),
it is designed
to operate on fuels that meet California
specifications. If such fuels are 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
on
your instrument panel may turn on and/or your vehicle
may fail a smog-check test. If this occurs, return to your
authorized Chevrolet dealer for diagnosis to determine
the cause of failure.
In the event it is determined that the
cause of the condition is the type of fuels used, repairs
may
not be covered by your warranty.
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Downloaded from www.Manualslib.com manuals search engine In Canada, some gasolines contain an octane enhancing
additive called
MMT. If such fuels are used, your
emission control system performance may be affected.
The malfunction indicator lamp
on your instrument
panel may also turn
on. If this occurs, return to your
authorized Chevrolet dealer for service.
To provide cleaner air, all gasolines are now required to
contain additives that will help prevent deposits from
forming in your engine and fuel system, allowing your
emission control system
to function properly. Therefore,
you should not have
to add anything to the fuel. In
addition, gasolines containing oxygenates, such as ethers
and ethanol, and reformulated gasolines may be
available in your area to help clean the air. General
Motors recommends that you use these gasolines if they
comply with the specifications described earlier.
NOTICE:
Your vehicle was not designed for fuel that
contains methanol. Don’t use it. It can corrode
metal parts
in your fuel system and also damage
plastic and rubber parts. That damage wouldn’t be covered under your warranty.
Fuels in Foreign Countries
If you plan on driving in another country outside the
United States or Canada, the proper fuel may be hard to
find. Never use leaded gasoline or any other fuel not
recommended in the previous text on fuel. Costly repairs
caused by use of improper fuel wouldn’t be covered by
your warranty.
To check on fuel availability, ask an auto club, or
contact a major oil company that
does business in the
country where you’ll be driving.
You can also write
us at the following address for
advice. Just tell
us where you’re going and give your
Vehicle Identification Number (VIN).
General Motors Overseas Distribution Corporation
North American Export Sales
(NAES)
1908 Colonel Sam Drive
Oshawa, Ontario
LlH 8P7
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