heating 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.

Downloaded from www.Manualslib.com manuals search engine Features & Controls
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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Heating and VentMion
In these settings, the air conditioner
compressor doesn't
run. Outside air
enters the vehicle as indicated. For each
setting, adjust the temperature control
lever and
-fan speed as desired.
flows through the instrument panel
outlets.
*A (Hwt): .In this setting, most air
flows through heater ducts near the
floor. Some
air will also flow through
the defroster vents.
If your vehicle has an engine block
heater and you use it during cold
weather,
0°F (-18°C) or lower, your
heating system will more quickly
provide ,heat
because the engine coolant
is already warmed. See the Index under
Engine Block Heater.
4
(Vent): In this setting, outside air
Defogging and Defrosting
YoUr vehicle has two settings for
clearing your windows. The-air
conditioner
compressor will run in both
of these settings to remove moisture
from the air when the temperature is
above freezing. For each setting, adjust
the temperature control
lever and fan
speed as desired.
(@ (Defrost): This setting directs
90% of the air through the windshield
defroster vents
and the side window
vents, and 10% though the floor heater
ducts.
To defrost the windshield, slide the
temperature control lever
to the far right,
press the (@ button, and adjust the
fan to the highest speed.
For rapid
defrosting,
90% of the air will be
directed to the windshield and side
window vents.

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... I..
1. 140
Automutic Ekctronic
Climate Control (OPTION)
With this system, you can control the
ventilation, heating
and air conditioning
in your vehicle, or you can use the
automatic setting.
Your vehicle also has
the flow-through ventilation system
described later
in this section.
The digital screen displays the outside
temperature, the inside temperature
setting, and the fan speed.
If the inside
temperature is changed,
or if the system
is changed from
OFF to any mode, the
inside temperature setting will be
displayed for several seconds before the
outside temperature is again displayed.
The
air conditioner compressor operates
in all air conditioning positions, and in
(@ (Defrost) when the outside
temperature is above freezing.
When
the air conditioner is on, you may
sometimes notice slight changes in your
vehicle's engine speed and power. This
is normal, because the Automatic
EIectronic Climate Control system
is
designed to cycle the compressor on
and off to keep the desired cooling and
to
help your vehicle's fuel economy.
TEMP SET: This control sets the
interior temperature you want. Press
V to lower the inside temperature
setting; press
A to raise the setting.
The temperature
you set will be
displayed on the digital screen.
Once you set the temperature you want,
the system will try to maintain this temperature,
whether
you are using the
heating
or the cooling controls.
However, if you set the temperature for
60°F (16°C) or 90°F (3Z°C), the fan will
stay on 3p udess you select a
different speed.
Your Automatic Electronic Climate
Control system
has three sensors. The
sun load sensor on top of the dashboard
detects increased interior temperature
caused by sunlight.
To keep you
comfortable, it reduces the interior
temperature
by as much as 5°F (3°C)
below the setting on the digital screen.
The outside air temperature sensor,
located on the right
side of the upper
radiator support
in the grille opening,
reads the outside temperature.
This is
what you usually see on the display.

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Comfort Controls & Audio Systems
Directional Controls (CONT.)
also controls the fan speed
-automaticallyy, unless the fan is
overridden
by the 7 or A button.
'YJJ(Heater): In this setting, all air
coming into the vehicle. is forced to the
floor. The fan blower motor will vary
in speed unless yowpress the Vur A
button. The in-car temperature will
adjust to the setting you choose. The
air conditioning compressor will not.
run in the manual heater mode.
If .your vehicle has an
engine block
heater
and you.use .it during cold
weather,
UoF (-18°C) or lower, your
heating system will .more quickly
provide heat became the engine coolant
is already warmed. See the
Index under
Engine Bluck Heater.
44
(Defrost): With this setting,
mast
of the air is forced. through the
windshield defroster vents. The
cornpressor
runs by using all the input
signals. The fan blower also .goes to a
fixed
high speed with no delay. After
start-up you can override the High fan
blower speed by pushing or AUTO.
DEFOG: Press the and (@'
buttons at the same time to operate the
defog mode. This directs warmed air
through the windshield defroster
vents,
and through the heater ducts.
OFF: Press to turn off the system.
Rear Window Defogger
(COUPE AND HARDTOP CONVERTlBLE)
a (Rear Window Defogger) :Press
this button to warm the defogger grid
on the rear window and
warm the
power mirrors. The indicator light will
glow while the rear window defogger is
operating.
If you have a convertible,
you. will have the 4 (Power Mirror
Defogger) button .on your climate
control system. This button
is for
heated mirrors only. The -rear window
defogger
will turn:off automatically after.
about
10 minutes. of use, You can also-
turn the defogger
off by turning off the
ignition
or by pressing the @ button
again.

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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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. )

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262
Rear Axle (CONT~)
What to Use:
To add lubricant when the level
use Me Lubricant (GM Part Na
12345977) or SAE BOW-90 GL-5
lubricant. To completely refill after
-draining, add four ounces (118 mQ af
Limited-Slip Dlfferential Lubricant
Additive (GM Part No. 1052358). Zmn
fill to the bottom of the filler plug hole
with Axle ‘Lubricant (GM Part No.
12345977) o,r SAE 8OW-90 GL-5 gear
lubricant.
Engine Coolant
e foUowing explains your cooling
sgstm and how to add coolant when it
is Im. If you have a problem with
e~@e overheating, see the Index under
Engine Ouerheating.
The proper coolant for your Corvette
* Give freezing protection down to
Give boiling protection up. to 262°F
Protect against rust and corrosion.
Help keep the proper engine
Let the warning lights work as they
-3m (-37°C).
(128°C) ~
temperature.
should.
What to Use:
Use a mixture of one-half clean wafer
(preferably distilled) and one-half
antifreeze that
meets “GM Specification
1825-M,” which won’t damage
aluminum parts. You can also use a
recycled coolant conforming to GM
Specification 1825-M with a complete
coolant
flush and refill. If you have the
LTl engine, use GM Engine Coolant
Supplement (sealer)
with any complete
coolant change.
If you use these, you
don’t need to add anything else.

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Adding Coolant-LTI Engine
Tb Check Coolant:
Wh& your engine is cold, :che.ck the
dipstick on the cap of the coolant-
recovery .tank. The. coolant level should
be at C.OLD, orst little higher. When
your engine-is wm, the level on the
dips’tiik should be up to HOT, or a
little higher. If your engine is
overheating, see the Index under
Engine Overheating.
Your Corvette als:o- has .a coolant high
fill res.Crvoir lgcated at the-right re,ar of
the engine compartment.