radiator CHEVROLET CORVETTE 1996 4.G Owners Manual

Downloaded from www.Manualslib.com manuals search engine wJ HEATER: This setting directs all of the air
through the floor ducts.
DEFROST This setting directs most of the
air through the windshield defroster and side window
defogger vents and some
of the'air through the
floor ducts.
~,4 DEFOG: If you have the automatic system, this
setting directs air to the floor and defroster vents. 8.
To turn on DEFOG,
push the HEATER and
DEFROST buttons at the same time. Both green
lights above the buttons will
come on to let you know
that DEFOG is working.
Temperature Sensors
Sunload:
This sensor is on top of the instrument panel.
When the inside temperature is increased by sunlight,
the system will lower the inside temperature up to 5
OF
(3 O C) below the setting on the display.
Outside Temperature: This sensor is on the right side
of the upper radiator support in the grille opening. This
is what you usually see on the display.
If the outside temperature goes up, the displayed
temperature will not change until:
0 Vehicle speed is above 25 mph (40 km/h) for at least
0 Vehicle speed is above 45 mph (72 km/h) for one
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.
three minutes, or
and a half minutes.
Inside Temperature: This sensor is in the center air
outlet on the passenger side.
I€ you block or cover either interior sensor (sunload or the
inside temperature), the system will give a false reading.
3-5

Downloaded from www.Manualslib.com manuals search engine When it is cool, remove the coolant recovery tank cap
and look at the dipstick.
The coolant level should be at or above
COLD. If it
isn’t, you may have a leak in the radiator hoses, heater
hoses, radiator, water pump
or somewhere else in the
cooling system.
.h CAUTION:
*
8’
Heater and radiator hoses, and other engine
parts, can be very
hot. Don’t touch them. If you
do, you can be bul‘ned.
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.
I NOTICE:
I
Engine damage from running your engine
without coolant isn’t covered by your warranty.
I
If there seems to be no leak, with the engine on, 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.
5-16

Downloaded from www.Manualslib.com manuals search engine 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 the COLD mark, add a 50/50 mixture
of
clean water (preferably distilled) and DEX-COOL“
(orange-colored, silicate-free) antifreeze at the coolant
recovery tank. (See “Engine Coolant” in the Index
for more information.)
-
A CAUTION:
Adding only plain water to your cooling system
can be dangerous. Plain water, or some other
liquid like alcohol, can boil before the proper
coolant
mix will. Your vehicle’s coolant warning
system is set for the proper coolant mix. With
plain water or the wrong mix, your engine could
get too hot but you wouldn’t get the overheat
warning.
Your engine could catch fire and you or
others could be burned. Use
a 50/50 mix of clean
water and
DEX-COOL TM antifreeze.
NOTICE:
In cold weather, water can freeze and crack the
engine, radiator, heater core and other parts.
Use the recommended coolant and the proper
coolant mix.
5-17

Downloaded from www.Manualslib.com manuals search engine How to Add Coolant to the C
Fill Reservoir mt
H
I NOTICE:
Your engine has a specific coolant high fill
reservoir
fill procedure. Failure to follow this
procedure could cause your engine
to overheat
and be severely damaged.
1. You can remove the coolant high fill reservoir
pressure cap when the cooling system, including the
coolant high
fill reservoir pressure cap and upper
radiator hose, is no longer hot. Turn the pressure cap
slowly counterclockwise
until it first stops. (Don’t
press down while turning
the pressure cap.)
If you hear a hiss, wait for that to stop. A hiss means
there is still some pressure left.
2. Then keep turning the pressure cap, but now push
down
as you turn it. Remove the pressure cap.
5-19

Downloaded from www.Manualslib.com manuals search engine What to Use
To add lubricant when the level is low, use Axle
Lubricant (GM
Part No. 12345977) or SAE SOW-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 SOW-90 GL-5 gear
lubricant.
Engine Coolant
The cooling system in your vehicle is filled with new
DEX-COOL (orange-colored, silicate-free) engine
coolant. This coolant is designed
to remain in your
vehicle for
5 years or 100,000 miles (166 000 km),
whichever occurs first.
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.
A 50/50 mixture of water and the proper coolant for
your Corvette will:
0 Give freezing protection down to -34°F (-37°C).
0 Give boiling protection up to 265 OF ( 129 O C).
Protect against rust and corrosion.
Help keep the proper engine temperature.
0 Let the warning lights and gauges work as they should.
NOTICE:
When adding coolant it is important that you use
DEX-COOL (orange-colored, silicate-free)
coolant meeting GM Specification 6277M.
If
silicated coolant is added to the system,
premature engine, heater core or radiator
corrosion may result. In addition, the engine
coolant will require change sooner
-- at
30,000 miles (50 000 km) or 24 months,
whichever occurs first.
6-25

Downloaded from www.Manualslib.com manuals search engine What to Use
Use a mixture of one-half clean water (preferably
distilled) and one-half
DEX-COOL TM (orange-colored,
silicate-free) antifreeze that meets GM Specification
6277M, which won’t damage aluminum parts. Use
GM Engine Coolant Supplement (sealer) (GM
Part
No. 3634621) with any complete coolant change. If you
use this mixture, you don’t need to add anything else.
Adding only plain water to your cooling system
can be dangerous. Plain
water, or some other
liquid like alcohol, can boil before the proper
coolant mix will. Your vehicle’s coolant warning
system is set for the proper coolant mix. With
plain water or the wrong mix, your engine could
get too hot but you wouldn’t get the overheat
warning. Your engine could catch fire and
you or
others could be burned. Use
a 50/50 mix of clean
water and
DEX-COOL TM (orange-colored.
silicate-free) antifreeze.
NOTICE:
If you use an improper coolant mix, your engine
could overheat and be badly damaged. The
repair cost wouldn’t be covered by your
warranty. Too much water in the
mix can freeze
and crack the engine, radiator, heater core and
other parts.
If you have to add coolant more than four times a year,
have your dealer check your cooling system.
NOTICE:
If you use the proper coolant, you don’t have to
add extra inhibitors or additives which claim to
improve the system. These can be harmful.
.

Downloaded from www.Manualslib.com manuals search engine Adding Coolant to the Recovery Tank
If you need 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.
.JTION:
r
Turning the coolant high fill reservoir pressure cap
when the engine and radiator are hot
can allow
steam and scalding liquids to blow out and burn
you badly. Never
turn the pressure cap -- even a
little
-- when the engine and radiator are hot.
Add coolant mix at the recovery tank, but be careful not
to spill it.
I
CAUTION:
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 dealer or the procedure may be
found in a Chevrolet Corvette Service Manual.
To
purchase a service manual, see “Service and Owner
Publications” in the Index.
6-28

Downloaded from www.Manualslib.com manuals search engine Coolant High Fill Reservoir Cap
NOTICE:
Your coolant high fill reservoir cap is a 15 psi
(105 kPa) pressure-type cap and must be tightly
installed to prevent coolant loss
and possible
engine damage from overheating. Be sure the
arrows on the cap line up with the overflow tube.
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 pre-set temperature.
Power Steering Fluid
When to Check Power Steering Fluid
It is not necessary to regularly check power steering
fluid unless you suspect there is a leak in the system or
you hear an unusual noise.
A fluid loss in this system
could indicate a problem. Have the system inspected
and repaired.
6-29

Downloaded from www.Manualslib.com manuals search engine Ai g Washer Fluid
Open the cap labeled WASHER FLUID ONLY. Add
washer fluid until the tank is full.
L
NOTICE:
0 When using concentrated washer fluid,
follow the manufacturer’s instructions for
adding water.
Don’t mix water with ready-to-use washer
fluid. Water can cause the solution to freeze and damage your washer fluid tank and
other parts of the washer system. Also,
water doesn’t clean
as well as washer fluid.
three-quarters full when it’s
very cold. This
allows for expansion, which could damage
the tank if it is completely full.
windshield washer. It can damage your
washer system and paint.
Fill your washer fluid tank only
0 Don’t use radiator antifreeze in your
6-31

Downloaded from www.Manualslib.com manuals search engine I I Short TripKity Maintenance Schedule I I I I
99,000 Miles (165 000 km)
0 Change engine oil and filter (or every
3 months, whichever occurs first).
An Emission Control Service. *
DATE ACTUAL MILEAGE SERVICED BY:
100,000 Miles (166 000 km)
0 Drkin, flush and refill cooling system
(of every 60 months since last service,
whichever occurs first). See “Engine
Caolant” in the Index for what to use.
In pect hoses. Clean radiator, condenser,
pr
1 ;ssure cap and neck. Pressure test cooling
system and pressure cap.
An Emission Control Service.
7-26