1994 CHEVROLET CORVETTE coolant temperature

Downloaded from www.Manualslib.com manuals search engine Check Gauges Light
This light will come on briefly when you are starting
the engine. If the light comes
on and stays on while you are driving,
check your gauges to see if they are in
the warning areas.
This light can come on for:
high oil temperature or low oil
pressure
high coolant temperature
high or low battery voltage
low fuel level
LOW
OIL
L
Low Oil Light
This light should come on while you are
starting your engine. If
the light doesn’t
come on, have it repaired.
If the light
comes on while starting your engine and
stays on, your engine oil level may be too
low. You may need to add oil. See
“Engine Oil” in the Index.
LOW
COOLANT
Low Coolant Light
This light comes on when the coolant in
the system is low. You may need to add
coolant. See “Engine Coolant” in the
Index.
NOTICE:
Driving with the “LOW COOLANT”
light on could cause your Corvette to
overheat. See “Engine Overheating”
in the Index. Your Corvette could be
damaged, and it wouldn’t be covered
by your warranty.
93 ...

Downloaded from www.Manualslib.com manuals search engine Heating
The heater works best if you keep your
windows closed while using it.
1. Press yri .
2. Press #A .
3. Slide the temperature control lever to
If your vehicle has an engine coolant
heater and you use it in cold weather,
0°F (-18°C) or lower, your heating
system can provide heat more quickly
because the engine coolant is already
warmed. See “Engine Coolant Heater”
in the Index. a comfortable setting.
Bi-Level
You may want
to use bi-level on cool, but
sunny days. This setting directs outside
air through the instrument panel vents and
the heater ducts.
1. Press $2 .
2. Press #A .
3. Slide the temperature control lever to
a comfortable setting.
Ventilation
For mild outside temperatures, when little
heating or cooling is needed, you can still
direct outside air through your vehicle.
I. Press .
2. Press SA.
3. Slide the temperature control lever to
a comfortable setting.
Defogging and Defrosting
Windows
Your vehicle has several settings for
Aearing your windows. The air
Zonditioner compressor will
run to help
remove moisture from the air.
To defrost the windshield quickly:
I. Press p .
2. Press SA.
3. Slide the temperature control lever all
the way to the right.
To warm passengers while keeping the
windshield clear:
1. Press wd and at the same time.
2. Press SA.
3. Slide the temperature control lever to
To defrost the side windows quickly:
I. Press .
2. Press SA.
3. Slide the temperature control lever all
a
comfortable setting.
the way to the right.
Cooling
The air conditioner works best if you keep
your windows closed. On very hot days,
,pen the windows just long enou,gh for
:he hot air to escape.
I. Press A*J .
2. Press SA.
3. Slide the temperature control lever to
a comfortable setting.
107. I

Downloaded from www.Manualslib.com manuals search engine This delay helps prevent a false reading.
If vehicle speed remains above
25 mph
(40 kmh) or the temperature goes down,
the display is updated immediately.
If your vehicle has been
off for more than
three hours, the current outside
temperature will be stored
in the system
when you start the vehicle.
Inside Temperature: This sensor is in the
center air outlet on the passenger side.
If you block or cover either interior
sensor, the system will give a false
reading.
Automatic Control
The system will adjust to maintain the
temperature you set. It will select the best
fan speed and air flow setting to keep you
comfortable with the least amount of
noise.
1. Press the arrows on the “TEMP SET”
switch to set a comfortable
temperature.
2. Press “AUTO.”
The fan speed will adjust automatically unless you press
the arrows on the switch.
Manual Heating
The heater works best if you keep your
windows closed while using it.
1. Press the arrows on the “TEMP SET”
switch to set a comfortable
temperature.
2. Press uj .
3. Press the arrows on the fan speed
switch if you don’t like the automatic
setting. In “AUTO
# ” on cold days,
the fan will stay off until the coolant
warms up enough to heat your vehicle.
If your vehicle has an engine coolant
heater and you use it in cold weather,
0 OF (-1 8 O C) or lower, your heating
system can provide heat more quickly
because the engine coolant
is already
warmed. See “Engine Coolant Heater”
in the Index.
Manual Bi-Level
Bi-level can heat or cool outside air and
direct it in two directions.
1. Press the arrows on the “TEMP SET”
switch to set a comfortable
temperature.
2. Press 3 .
3. Press the arrows on the fan speed
switch if
you don’t like the automatic
setting.
Manual Ventilation
For mild outside temperatures, when little
heating or cooling is needed, you can still
direct outside
air through your vehicle.
1. Press the arrows on the “TEMP SET”
switch to set a comfortable
temperature. For ventilation, the system can’t cool the vehicle below
the outside temperature.
2. Press dJ .
3. Press the arrows on the fan speed
switch if you don’t like the automatic
setting.
Manual Cooling
The air conditioner works best if you keep
your windows closed. On very hat days,
open the windows just long enough for
the hot air to escape.
1. Press the arrows on the “TEMP SET”
switch to set a comfortable
temperature.
2. Press a. After cool-down, adjust
the air flow to another setting. The
compressor works in all settings
109 ...

Downloaded from www.Manualslib.com manuals search engine Problems on the Road
NOTICE:
Towing a vehicle over rough surfaces
could damage a vehicle. Damage
can occur from vehicle-to-ground
or vehicle-to-wheel-lift-equipment.
To help avoid damage, install a
towing dolly and raise vehicle until
adequate clearance
is obtained
between the ground and/or wheel-lift
equipment. Attach
a separate safety chain around the
outboard end of each lower control
arm.
NOTICE:
Do not allow chains to contact
spring, as damage to spring could
result.
Engine Overheating
You will find a engine coolant
temperature gauge on the instrument
cluster and a low coolant light on the
Driver Information Center.
If Steam Is Corning from Your Engine:
. . .I50

Downloaded from www.Manualslib.com manuals search engine Substitute Oil (LT1 Only): When adding
oil to maintain engine oil level, if an oil
meeting GM Standard GM4718M is not
available, you can use oil designated
either
SAE 5W-30 API Service SH or SG
at all temperatures, or
SAE 1OW-30 API
Service
SH or SG at temperatures above
0°F (-18°C). This oil should not be used
for an oil change.
Substitute Oil (LT5 Only): When adding
oil to maintain engine oil level, if an oil
meeting
GM Standard GM4718M is not
available, you can use oil designated SAE
1OW-30 API Service SH or
SG at all
temperatures. This oil should not be used
for an oil change.
Engine Oil Additives
Don’t add anything to your oil. Your
Chevrolet dealer is ready to advise if you
think something should be added.
When to Change Engine Oil
See if any one of these is true for you:
Most trips are less than 4 miles
It’s below freezing outside and most
trips are less than
10 miles (16 km).
(6 km).
The engine is at low speed most of
the time (as
in stop-and-go traffic).
Most trips are through dusty places.
If any one of these is true for your
vehicle, you need to change your oil and
filter every 3,000 miles
(5 000 km) or
3 months
- whichever comes first.
(See “Engine Oil Life Monitor” in the
Index.)
If none of them is true, change the oil
every 7,500 miles
( 12 500 km) or 12
months
- whichever comes first. Change
the filter at the first oil change and at
every other oil change after that. (See
“Engine Oil Life Monitor” in the Index.)
Engine Coolant Heater (Engine Block
Heater)
An engine coolant heater can be a big
help if you have to park outside in very
cold weather,
0 “F (- 18 “C) or colder. If
your vehicle has this feature, see “Engine
Coolant Heater” in the Index.
What to Do with Used Oil
Did you know that used engine oil
contains certain elements that may be
unhealthy for your skin and could even
cause cancer? Don’t let used oil stay on your
skin for very long. Clean your skin
and nails with soap and water, or a good
hand cleaner. Wash or throw away
clothing or rags containing used engine
oil. (See the manufacturer’s warnings
about the use and disposal of oil
products.)
Used oil can be a real threat to the
environment. If you change your own oil,
be sure to drain all free-flowing oil from
the filter before disposal. Don’t ever
dispose of oil by putting it in the trash,
pouring it on the ground, into sewers, or
into streams or bodies of water. Instead,
recycle
it by taking it to a place that
collects used oil. If you have a problem
properly disposing of your used oil, ask
your dealer, a service station or
a local
recycling center for help. L 1
181 ...

Downloaded from www.Manualslib.com manuals search engine Service and Appearance Care
Remove the nut on the outboard side
of the unit. Then loosen the front and
inboard nuts. For the LT5 engine, loosen
the two inboard nuts. Move the ECM unit
to either side.
Fluid should be added if the fluid level
is at or below the “ADD” mark on the
reservoir. There are additional instructions
on the reservoir cap.
When returning the ECM to its proper
position, make sure the bolts are aligned
with the slots in the bracket. Then gently
push down on the unit. When replacing
the unit, be careful not to over-tighten the
nuts -just tighten them until they are
snug.
. . * 188
Rear Axle
When to Check Lubricant
Refer to the Maintenance Schedule
to determine how often to check the
lubricant. See “Periodic Maintenance
Inspections” in the Index.
How to Check Lubricant
If the level is below the bottom of the
filler plug hole, you’ll need to add some
lubricant. Add enough lubricant to raise
the level to the bottom of the filler plug
hole.
What to Use:
To add lubricant when the level is low, use
Axle Lubricant (GM Part
No. 12345977)
or
SAE 8OW-90 GL-5 gear lubricant.
To completely refill after draining,
add 4 ounces (1 18 ml) of Limited-Slip
Differential Lubricant Additive (GM Part
No. 1052358). Then fill to the bottom of
the filler plug hole with Axle Lubricant
(GM Part
No. 12345977) or SAE 8OW-90
GL-5 gear lubricant.
Engine Coolant
The following explains your cooling
system and how to add coolant when
it
is low. If you have a problem with
engine overheating or
if you need to add
coolant to your high fill reservoir, see
“Engine Overheating” in the Index.
The proper coolant for your Corvette will:
0
0
0
0
0
Give freezing protection down to -34°F (-37°C).
Give boiling protection up to 262°F
(128°C).
Protect against rust and corrosion.
Help keep the proper engine
temperature.
Let the warning lights work as they
should.

Downloaded from www.Manualslib.com manuals search engine Service and Appearance Care
If you need to add more coolant, add the
proper mix at
the coolant recovery tank,
but only when your engine is cool. If the
tank is very low or empty, also add
coolant to the coolant high fill reservoir.
See “Engine Overheating”
in the Index
for information.
. . .190
Add coolant mix at the recovery tank, but
be careful not to spill it.
NOTICE:
You can be burned if you spill coolant
on hot engine parts. Coolant contains
ethylene glycol, and it will burn if the
engine parts are hot enough. Don’t
spill coolant on a hot engine.
For complete drain, flush and refill
of
the engine, contact your Chevrolet
jealer or the procedure may be found in
3 Chevrolet Corvette Service Manual. To
purchase a service manual, see “Service
Publications” in the Index.
Thermostat
Engine coolant temperature is controlled
by a thermostat in
the engine coolant
system. The thermostat stops the flow of
coolant through the radiator until the
coolant reaches a preset temperature.
When you replace your thermostat, an
AC@ thermostat is recommended.

Downloaded from www.Manualslib.com manuals search engine Replacement Parts
AirCleanerFilter .............................................. A1097C
Battery VINEngineCodeJ
........................................... 752-72
VIN Engine Code P
........................................... 75B-72
Coolant High Fill Reservoir Cap
.................................... RC36
Crankcase Ventilation Valve VIN Engine Code J
.............................. CV746CB and CV9 13C
VIN Engine Code P
................. : ........................ CV895C
VIN Engine Code
J .................................... PF970C (black)
VINEngineCodeP
............................................. PF51
VIN Engine Code J
.............................. GM Part No. 10067477
VIN Engine Code P
.............................. GM Part No. 10230259
VIN Engine Code
J ................................... 907 (0.050" Gap)
VIN Engine Code P
.................................... 906 (0.050" Gap)
Thermostat Temperature Specification
......................... 1 80 "F (82 O C)
Wheel Nuts
Wheel Nut Torque ................................... 100 lb. ft. ( 140 Nam)
Engine Oil Filter
Serpentine Belt
Spark Plug
225. ..