engine overheat CHEVROLET CORVETTE 1993 4.G Owners Manual

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How to Use this Manual
Ushg Your 7993 Corvette
Owner’s Manual
Many people read their owner’s manual
from beginning to end when they first
receive their
new vehicle. This will help
you learn about
the features and
controls for
your vehicle. In this
manual, you’ll find that pictures and
words
work together to explain things
quickly.
There
are nine parts with color-tabbed
pages
in this manual. Each part begins
with
a brief list of contents, so you can
usually tell at a- glance if that part
contains the infomation you want.
You can bend the manual slightly to
reveal the color tabs that help-
you find a
Part.
--
L.
Part 1: Seats & Safety Belts
This part tells you how to use your seats
and safety belts properly.
Part 2: fleatures & Controls
This part explains how to start and
operate your Corvette.
Part 3: Comfort Controls & Audio
Systems
This part tells you how to adjust the
ventilation and com€ort controls, and
how to
operate your audio system.
Part 4 Your Driving and the Road
Here you’ll find helpful information an(
tips about the road and how to drive
under different conditions.
d
Part 5: Problems on the Road
This part tells you what to do if you
have a problem while driving, such as a
flat tire
or engine overheating.
Part 6 Senrice & Appearance Care
Here the manual tells you how to keep
your Corvette
running properly and
looking good.
Part 7: Maintenance Schedule
This part tells you when to perform
vehicle maintenaxice
and what fluids
and hbricm‘ts to use.
Part 8: Customer Assistance
IHormation
This part tells you how to contact
Chevrolet for assistance and how to get
service publications. It also gives you
information on Reporting Safety
Defects.
Part 9: Index
Here’s an alphabetical listing of almost
every subject in this manual. You can
use it to quickly find something you
want to read.
Service Station Information
This is a quick re€erence of service
information.
You can find it on the last
page of this manual.

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Engine Block Heafer
(LT7 ENGINE, CANADA ONLY)
In very cold weather, 0°F (-18°C) or
colder, the engine block heater can
he1p:You’ll get easier starting and
better fuel economy during engin,e
warm-up.
To Use the Engine Block Heater:
1. Turn off -the engine.
2..Open the hood and un-wrap the
3. Plug it into a normal,. gromded.
electrical
cord.
110-volt
outlet.
64
A.
Plugging the.:cord into an ’ ’ .
ungrounded outlet could
cause an ‘electrical shock. Also, the
wrong lund of extension cord could
overheat and cause
a.fire. You
could be seriously injured. Plug the
cord
into a properly grounded
three-prong 110-volt outlet.
If the
cord won’t reach, use a heavy-duty
three-prong extension cord rated
for at least 15 amps.
, After y0u’V.e used the. b1o.d~ .heat,eI,
be
sure to.stolre the cord--as’it-was
. befoxe., to keep it; away from m.oving--:-
-engine.parts. If you don’t, it .cdd
.be- damaged.
__
How long should you keep the block
heater plugged in? The answer depends
on the weather, the kind of oil you
have, and some other things. Instead of
trying to list everything here, we ask
that you contact a Chevrolet dealer in
the area where you’ll be parking your
vehicle. The dealer can give: you the best
advice for that particular area.

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This gage shows the engine coolant
temperature,
I If the gage pointer moves-into the shaded
area, yow-engine is too
hot! It meamthat
your engine coolant
has overheated. If
you have, been operating your vehicle
under-
normal driving. conditions, you
should pull off the road, stop your
vehicle and turn off the engine as soon
as possible.
HOT COOLANT CAN BURN YOU
BADLY!
In Problems on the Road, the- manual
shows what to do. See the Ifidex under
Engine Overheating.
For -accurate gage measurements refer
to the
GAUGES button on the Trip
Monitor
(see Trip Monitov later in this
section).
If the LOW COOLANT light, located
-on the Driver Information Center,
comes on, your system is low on
coolant -and your engine may overheat.
Brake System Warning Light
Your Corvette’s hydraulic brake system
is divided.into two parts. If one part
isn’t working, the other part can still
work
and stop you. For good braking,
though,
you need both parts working
well.
If the warning light goes on, there could
be a brake problem. Have-your bralce
system inspected right away.
This light should come on as you start
the vehicle. If it doesn’t come on then,
have it
fixed.so it will be ready to warn
you if there’s a problem.
.-

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Low Coolant Warning Light
If this light comes on, your system is
overheat. See the Index under Engine
Coolant and have your vehicle serviced
a low on coolant and the engine may
Driver Infomtation Center
The Driver Information Center (DIC)
gives you important safety and
maintenance
facts. It will display
warning lights
€or the following:
LOW COOLANT
LOW TIRE PRESSURE [Option]
SERVICE LTPWS (Low Tire
Pressure Warning System) [Option]
INFL REST (Inflatable Restraint)
(Charging System)
I12
SERVICE ABS (Anti-Lock Brake
SERVICE ENGINE SOON
SERVICE RIDE CONTROL
[Option]
LOW OIL
ABS ACTIVE
SERVICE ASR (Acceleration Slip
Regulation)
ASR ACTIVE
ASR OFF
PASSIVE KEYLESS ENTRY
System) as soon as you can.

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ASR Off Ught
This indicator will coine on when you
turn the ignition on and remain on for a
few seconds during a system check. It
also comes on and stays on when the
ASR button is pressed to turn the
system off. See the Index under
Acceleration Slip Reguluat'a'on (ASR)
system.
I16
Seruice ASR Light
This indicator will come on when you
turn the ignition on and remain on for a
few seconds during a.system check.
If it
stays on, this may indicate a problem
with the ASR system. See your dealer
for
service.
A .'
. .. ..
~f you let ymi tires :spin at-
- high .speed when.~e.. .ASR. ..
.OFF light is.:on, :or dieg-the :
',SERVICE ASR Iight ,is on, .your . .'
tires can pplode,.and, you 'or others
could .be injured. And, spinning
your tires
with either- of -these light2
on can cause the-automatic . ;
transmission to overheat or can .:
'cause other problems. That .could
cause an engine fire or other
damage.
When you're stuck, spin
the wheels as little
as possible. If'
your vehicle is stuck; don't: .spin the
wheels above 35 mph (56 Wh) as
shown on the speedometer,

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“Riding” yom brakes. can
cause them to overheat $u:,~&e
point that they.won’t work well.
You might not be able to-stop .your
vehicle in time -to avoid an accident.
If you “ride” your bides,. they w3’i
get, suhot they :direquire a bt of
pedal force to slow you down.
Avoid “riding” the’brakes.
INoTIcE .
If you keep pace with the traffic and
allow realistic following distances, you
will eliminate a lot of unnecessary
braking. That means better braking and
longer brake
life.
If your engine ever stops while you’re
driving, brake normally but don’t
pump your brakes. If you do, the
pedal may get harder to push down. If
your engine stops, you wilI still have
some power brake assist. But you will
use it when you brake. Once the
power assist is used up, it may take
Homgez ta stop and the brake pedal will
be harder to push.
Anti-L~ck Brakes (ABS)
Your Corvette has an advanced
electronic braking system that will help
prevent skidding.
This light on the instrument panel will
go on when you start your vehicle.
See the Index under Anti-Lock Brake
System Light.

Downloaded from www.Manualslib.com manuals search engine H ere ~OU’II find What to do about:
same problems that can occur on
the road.
Part 5
Problems on the Road
Hazard Warning: Flashers +.. ........................................................................\
.... 204
Jump Starting ............ $. ..... (.. ............................ .,. ............................................... .-. 205
Towing Your Corvette ........................................................................\
................ 208
Engine:Overheating 21 3
If a Tire Gdes Flat ........................................................................\
........................ 224
Changing a Flat Tire ........................................................................\
.................... 225
C.ompact Spare Tire ..;.. ........................................................................\
................. 236
”4 ........................................................................\
.................
If You‘re Stuck: In. S.md, Mud, Tce or Snow .................................................... .. 237
LJ
203 . =

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Engine Overheating
Y0.u will find an engine coolant
temperature gage. on. the instrument
cluster and a low coolant warning light
on the Drives In€orrnation Centkr.
Ifsteamis

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If No Steam is Coming from Your
Engine:
If you get the overheat warning but see
or hear no steam, the problem may not
be too serious. Sometimes the engine
can get .a Me too hot when you:
9 Climb a long hill on a hot day.
4 Stop after high speed driving.
Idle for long periods in traffic.
If you get the overheat warning with no
sign of steam, try this for a minute or so:
1 I Turn off your air conditioner.
2. Turn on your heater to €ull hot at the
highest
fan speed and open the
window as necessary.
3. Try to keep your engine under load
(in
a -drive gear where the engine
runs slower).
If you no longer have the overheat
warning,.you
cm drive. Just to be safe,
drive slower for about ten minutes., If
the warning doesn't co~e back on, you'
can drive normally.
I€ the warning continues, pull over,
stop, and park your vehicle right away.
If there's still no sign of steam, you can
idle the engine for two or three minutes
while you're parked, to see jfthe
warning
stops. But then, if you still
have
the warning, TURN OFF THE
ENGINE AND GET EVERYONE OUT
OF THE VEHICLE until it cools down.
You- may decide not to l.23 the ho0.d but
to get service help right away.
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Engine Overheating (COW.)
A Heater adradiator hoses, ’.-
.and oiher enginelparts, can
.be.very-hot. Don’t touch them ...If
you do, you canbe burned.
Don’t run the engine
if there is a
leak. If
you run the engine,.it could
lose all coolant. That could cause
an engine fire, and you could be
burned. Get any leak fixed before
you drive the vehicle.
216
If there seems to be no leak, check to
see
if the electric engine fans are
running.
If the engine is overheating,
both fans
should be running. If they
aren’t, your vehicle needs service.
How to Add Coolant to the Coolant
Recovery Tank
If you haven’t found a problem yet, but
the coolant level isn’t at
or above
COLD,
add a 50/50 mixture of clean
water (preferably distilled) and a proper
antifreeze at the coolant recovery tank.
(See the
Index under Coolant for more
information about the proper coolant
mix. )