Downloaded from www.Manualslib.com manuals search engine I NOTICE:
I
If you try to do your own service
work without knowing enough about
it, your vehicle could be damaged.
I
Fuel
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.)
3.4L L32 (Code S)
Use regular unleaded gasoline rated at 87
octane or higher. It should meet
specifications
ASTM D4814 in the U.S.
and CGSB 3.5-92
in Canada. These fuels
should have the proper additives,
so you
should not have to add anything to the
fuel.
In the U.S. and Canada, it’s easy to be
sure you get the right kind
of gasoline
(unleaded). You’ll see “UNLEADED’
right on
the pump. And only unleaded
nozzles will
fit into your vehicle’s filler
neck. Be
sure the posted octane is at least
87. 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
87 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.
5.7L LT1 (Code P)
Use premium unleaded gasoline rated at
91 octane or higher.
You may use middle
grade or regular unleaded gasolines, but
your vehicle may not accelerate as well.
The gasoline you use should meet
specifications ASTM D4814 in the U.S.
and CGSB 3.5-92 in Canada. These fuels
should have the proper additives,
so you
should not have to add anything to the
fuel. [n
the U.S. and Canada, it’s easy to be
sure you get the right kind of gasoline
(unleaded). You
’ 11 see “UNLEADED’
right on the pump. And only unleaded
nozzles will fit into
your vehicle’s filler
neck.
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 91 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.
181 ...
Downloaded from www.Manualslib.com manuals search engine e
Service and Appearance Care
1
All Engines
What about gasoline with blending
materials that contain oxygen
(oxygenates), such as MTBE or alcohol?
MTBE is “methyl tertiary-butyl ether.”
Fuel that is no more than
15% MTBE is
fine for your vehicle.
Ethanol is ethyl or grain alcohol.
Properly-blended fuel that is no more
than
10% ethanol is fine for your vehicle
Methanol is methyl or wood alcohol.
NOTICE:
Fuel that is more than 5% methanol
is bad for your vehicle. 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. And
even at
5% or less, there must be
“cosolvents” and corrosion prevent-
ers in this fuel to help avoid these
problems.
Gasolines for Cleaner Air
Your use of gasoline with deposit control
additives will help prevent deposits from
forming in your engine and fuel system.
That helps keep your engine in tune and
your emission control system working
properly. It’s good for your vehicle, and
you’ll be doing your part for cleaner air.
Many gasolines are now blended with
oxygenates. General Motors recommends
that you use gasolines with these blending
materials, such as MTBE and ethanol. By
doing
so, you can help clean the air,
especially in those parts of the country
that have high carbon monoxide levels.
In addition, some gasoline suppliers are
now producing reformulated gasolines.
These gasolines are specially designed to
reduce vehicle emissions. General Motors
recommends that you use reformulated
zasoline. By doing
so, you can help clean
:he air, especially in those parts of the
:ountry that have high ozone levels.
You should ask your service station
lperators if their gasolines contain deposit
:ontrol additives and oxygenates, and
if
:hey have been reformulated to reduce
iehicle emissions.
Fuels in Foreign Countries
If you plan on driving in another country
outside the
U.S. or Canada, unleaded fuel
may be hard to find.
Do not use leaded
gasoline. If
you use even one tankful,
your emission controls won’t work well
or at all. With continuous use, spark plugs
can get fouled, the exhaust system can
corrode, and your engine oil can
deteriorate quickly. Your vehicle’s oxygen
sensor will be damaged. All
of that means
costly repairs that 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).
Seneral Motors Overseas Distribution
Vorth American Export Sales (NAES)
1908 Colonel Sam Drive
Dshawa, Ontario
L1H 8P7
Zanada Corporation
. . .I82
Downloaded from www.Manualslib.com manuals search engine Service ad Appearance Care
Recommended SAE Viscosity
Grade Engine Oils
For best fuel economy and cold starting,
select the lowest SAE viscosity grade oil
for the expected temperature range.
HOT
WEATHER
-
I
u)oKFoR
ONE OF THESE
LABELS
SAE CW-30 PREFERRED
COLD
WEATHER
IF NEITHER SAE 5W-M NOR SAL 10W.30
ORADE OIU ARE A E, ME 30 GRADE
40 DEGREES F (4 DEGREES C).
DO NOT USE SAE 1OW-40, SAE 2OW-50 OR ANY OTHER GRADE OIL NOT RECOMMENDED.
MAY BE USED AT Ttmr~nnTURES ABWE
As shown in the chart, SAE 5W-30 is
best for your vehicle. However, you
can use SAE
1OW-30 if it’s going to
be
0°F (-18°C) or above.
These numbers on an oil container
show
its viscosity, or thickness. Do
not use other viscosity oils such as
SAE 1OW-40 or SAE 20W-50.
[f you cannot find oils with the new
‘starburst” symbol on the front of the
;ontainer, you should look for and use
3ils containing the following three
:hings:
SH or SG
“SH’ or “SG” must be on the oil
container
, either by itself or
combined with other quality
designations, such as “SH/CD,”
“SH, SG, CD,” “SG/CD,” etc. These
letters show American Petroleum
Institute
(API) levels of quality.
SAE
5W-30
Energy Conserving I1
Oils
with these words on the
container will help you save fuel. These
three things are usually included
in a doughnut shaped logo (symbol) on
most containers.
If you cannot find oils
with the “starburst” symbol, you should
look for oils with the doughnut shaped
symbol, containing the three things
noted above.
NOTICE:
If you use oils that do not have
either the “starburst” symbol or an
API SH or SG designation, you can
cause engine damage not covered
by your warranty.
GM Goodwrench@ oil (in Canada, GM
Engine Oil) meets all the requirements
for your vehicle.
Engine Oil Additives:
Don’t add anything to your oil. Your
Chevrolet dealer
is ready to advise if
you
think something should be added.
. . .I90