CHEVROLET CORVETTE 1994 4.G Owners Manual

Downloaded from www.Manualslib.com manuals search engine Problems on the Road
NOTICE:
Spinning your wheels can destroy
parts of your vehicle as well as the
tires. If you spin the wheels too fast
while shifting your transmission
back and forth, you can destroy your
transmission.
. . .I70
Rocking your vehicle to get it out:
First, turn your steering wheel left and
ight. That will clear the area around your
front wheels. You should
turn your ASR
system
off. (See “ASR System” in the
[ndex.) Then shift back and forth between
“R’ (Reverse) and a forward gear (or with
9 manual transmission, between First or
Second gear and Reverse), spinning the
wheels as little as possible. Release the
accelerator pedal while you shift, and
press lightly on the accelerator pedal
when the transmission is in gear. If that
doesn’t get you out after a few tries, you
may need to be towed out.
If you do need
to be towed out, see “Towing Your
Vehicle” in the Index.

Downloaded from www.Manualslib.com manuals search engine Here you will find information
about the care of your Corvette
.
This part begins with service
and fuel information. and then it
shows how
to check important
fluid and lubricant levels
. There
is also technical information
about your vehicle. and a section devoted
to its
appearance care
.
Part 6
Service & Appearance Care
Service ........................................................
Fuel ..........................................................
Checking Things under the Hood ...................................
HoodRelease .................................................
Engineoil .................................................
Aircleaner ........................... ...................
Automatic Transmission Fluid ..................................
Manual Transmission Fluid ......................................
Hydraulic Clutch ...............................................
RearAxle ....................................................
Enginecoolant ................................................
Power Steering Fluid ...........................................
Windshield Washer Fluid ........................................
Brake Master Cylinder ..........................................
Battery ......................................................
Bulb Replacement ...............................................
Windshield Wiper Blades ..........................................
Tires ..........................................................
Appearancecare ................................................
Appearance Care Materials Chart ...................................
Vehicle Identification Number (VIN) ................................
Service Parts Identification Label ...................................
Add-on Electrical Equipment ......................................
Fuses and Circuit Breakers ........................................
Replacement Bulbs ..............................................
Capacities and Specifications ...................................
LoadingYourVehicle ............................................
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11
Doing Your Own Service Work
If you want to do some of your own
service work, you’ll want to get the
proper Chevrolet Service Manual. It tells
you much more about how to service
your Corvette than this manual can.
To
order the proper service manual, see
“Service Publications” in the Index.
Your vehicle has an air bag system.
Before attempting to do your own
service work, see “Servicing Your Air
Service
Your Chevrolet dealer knows your vehicle
best and wants you to be happy with it.
We hope you’ll go to your dealer for all
your service needs. You’ll get genuine
GM parts and GM-trained and supported
service people.
We hope you’ll want to keep your GM
vehicle all
GM. Genuine GM parts have
one of these marks. Bag-Equipped
Corvette” inthe Index.
You should keep a record with all parts
receipts and list the mileage and the date
of any service work you perform. See
“Maintenance Record” in the Index.
I NOTICE:
I
If you try to do your own service
work without knowing enough about
it, your vehicle could be damaged.
I
. . .172

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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.
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 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.
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
preventers 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
gasoline. By doing
so, you can help clean
the air, especially in those parts of the
country that have high ozone levels.
You should ask your service station
operators
if their gasolines contain deposit
control additives and oxygenates, and if
they have been reformulated to reduce
vehicle emissions.
173 ...

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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).
General Motors Overseas Distribution
North American Export Sales
(NAES)
1908 Colonel Sam Drive
Oshawa, Ontario LlH 8P7
Corporation
. . .174
Filling
Your Tank
The cap is under a hinged door on the rear
of your vehicle. While
refueling, place the cap in the
indent to the left of the filler neck.
To take
off the cap, turn it slowly to the
left (counterclockwise).

Downloaded from www.Manualslib.com manuals search engine Be careful not to spill gasoline. Clean
5asoline from painted suirfaces
as soon
1s possible. See “Cleaning the Outside
If Your Corvette’’ in the Index.
When you put the cap back on, turn it to
:he right until you hear at least three
:licks.
NOTICE:
If you need a new cap, be sure to
get the right type. Your dealer can
get one for you.
If you get the wrong
type, it may not fit or have proper
venting, and your fuel tank and
emissions system might be damaged.
I Checking Things under
the Hood
Hood Release
ro open the hood, first pull the handle
inside the vehicle.
L
Fhen go to the side of the vehicle and pull
~p on the rear edge of the hood, near the
windshield.
175 ...

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When you open the hood, you'll see:
1. Hydraulic Clutch Fluid Reservoir (if
2. Brake Fluid Reservoir
equipped)
. . .I76
1
Before closing the hood, be sure all
the filler caps are on.
'*?-
5.7L LTI (Code P)
3. Battery
4. Electrical Engine Fan
5. Air Cleaner
6. Coolant Recovery Tank
7. Power Steering Fluid Reservoir
8. Engine Oil Fill Cap
9. Engine Oil Dipstick
10. Windshield Washer Fluid Reservoir
11. Coolant High Fill Reservoir
12. Automatic Transmission Dipstick
(if equipped)
I

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k
"1
5.7L LT5 (Code J)
When you open the hood, you'll see:
1. Hydraulic Clutch Fluid Reservoir 5. Air Cleaner
2. Brake Fluid Reservoir 6. Coolant Recovery Tank
3. Battery 7. Power Steering Fluid Reservoir
4. Electric Engine Fan 8. Engine Oil Fill Cap Before closing
the hood, be
sureall
the filler caps are on. . ..
'., , ,.
9. Engine Oil Dipstick
10. Windshield Washer Fluid Reservoir
11. Coolant High Fill Reservoir
177..

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Then release the hood strut by moving it
to the centered position and lowering the
hood. Lower the hood until it is about
12
inches (300 mm) above the engine, then
release it.
- - 178
I
!
5.7L LTl (Code P)
Engine Oil
If you have the LTl engine, it’s a good
idea to check your engine oil level every
time you get fuel. In order to get an
accurate reading, the oil must be warm
and the vehicle must be on level ground.
Turn off the engine and give the oil a few
minutes to drain back into the oil pan.
If
you don’t, the oil dipstick might not show
the actual level. d
tl
It
rain
le oi
:vel.
5.7L LT5 (Code J)
f you have the LT5 engine, the best time
3 check your engine oil is when the
ngine is cold. If you run the engine, the
ngine oil won’t drain back into the pan
ast enough. Give the oil two hours to
back into the oil pan. If you don’t,
1 dipstick might not show the actual

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To Check Engine Oil
Pull out the dipstick and clean it with a
paper towel or cloth, then push it back
in
all the way. Remove it again, keeping the
tip lower.
5.7L LTl (Code E
When to Add Oil:
If the oil is at or below the “ADD’ mark,
you’ll need to add some oil. But you musl
use the right kind. This section explains
what kind
of oil to use. For crankcase
capacity, see “Capacities and
Specifications” in the Index.
NOTICE:
Don’t add too much oil. If your
engine has
so much oil that the oil
level gets above the upper mark that
shows the proper operating range,
your engine could be damaged.
5.7L LT5 (Code J)
Just fill it enough to put the level
somewhere
in the proper operating range.
Push the dipstick all the way back
in
when you’re through.
What Kind of Oil to Use
Look for two things:
GM4718M
The Corvette engine requires a special
oil meeting GM Standard GM47 18M.
Oils meeting this Standard may be
identified as synthetic. However, not
all SYNTHETIC oils will meet this
GM Standard. You should look
for
and use only an oil that meets GM
Standard GM47 18M.
179 ...