1993 CHEVROLET CORVETTE Owners Manual

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Adding CooIant-LTI €ngine
(CONT.)
To Add Coolant to the Coolant
Recovery Tank:
For more information on adding coolant
to the LT1 engine, see the Index under
Engine Overheating.
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 the following procedure
and refer to the Index under Engine
Overheating.
264
To Add Coolant to the High Fill
Reservoir:
L
the engine and cooling system are
hot-can allow steam and -scalding
.liquids to blow out and burn you
badly. Never turn the pressure
cap-even a Me-when the engine
and cooling system are hot.
4
NOTICE

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1. When the..engine-is cool, remove the
pressure .cap.
.Without pressing down on the
pressure cap, turn it slowly to the.
left .until.it reaches a “stop.”
If YOU hear a hiss, it means there is
still some pressure. Wait for the
hiss to stop. Then press down on
the pregsure- cap and continue
turning it to the left. Remove the
pressure cap.
2. After the engine cools, open the air
bleed valves on the throttle body and
water pump inlet.
3.. fill with the proper mix. Add .coolant
until. you see a steady stream of.
coolant corning .frarn.the bleed vdves.
4, Then close the bleed valves.
5. Continue to fiH the coolant high .fill.
reservoir u.p to the base of the €iller
neck.
6. Rinse or wipe the spilled crrolant
from the engine-and compartment.
7. Start the engine-and allow it .to.run in
idkfor
approximately four minutes.
By this time, the coolknt level inside

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Adding Coolant-LT1 Engine
(CONT,)
the coolant high fill resekvoir will be
lower.
Add more of the proper mix
through the filler neck until the level
reaches the
base of the filler .neck.
8. Replace the pressure cap. When it's
tight, the arrows on the cap should
line up
with the overflow tube on the
reservoir filler neck. Shut the engine
Off.
9. Then fill the coolant .recovery t,mk to
the proper level.
For complete drain, flush and refill,
contact your Chevrolet dealer
or the
procedure
may be found in a Chevrolet
Corvette Service Manual. To purchase a
Service Manual, see the-Index under
Service Publications.
Adding GooCant-LT5 hgine
To Check Coolant:
When your engine is cold, check the-
dipstick on the cap of the coolant
recovery
tanfr. The coolant level should
be at COLD or a little higher. When
your engine is warm, the level on the
dipstick
should be up to HDT, or a
little higher. If your engine is
overheating, see the
Index under
Evlgirze Overheating.
Your Corvette also has a coolant high
fill reservoir located at the right rear of
the engine'compartrnent.
To Add Coolant:
For more .information on ,adding coolant
to the LT5 engine, see the Index u.nder
Engine Overheating.
If you need more coolant, add the
proper mix at the coolant recovery
tank, but ,only when your engine is cool.
If the tank isvery low or empty, also
add coolant to the coolant high fill
reservoir.
Add coolant to the base of the filler
neck, if needed.

Downloaded from www.Manualslib.com manuals search engine 1. When the engine is cool, remove the
pressure cap.
Without pressing down on the
pressure cap, turn it slowly to the
left: until it reaches
a "stop."
If you hear a hiss, it means there is
stiU. some pressure. Wait €or the
hiss to stop. Then press down on
the pressure cap and continue
turning
it to the left. Remove the
pressure cap.
A
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
coolafit
on .a hot engine.

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Adding Caalant-LT5 Enghe
(CONT,)
2. Add the coolant mix to the coolant
high fill reservoir until the level
reaches the
base of the res&voir filler
neck
3. With the pressure cap still removed,
run the engine until the upper
radiator
hose is hot. With the engine
at idle, add coolant
mix again, if
needed, to bring the level back up to
the reservoir filler neck base.
4. Put on the pressure cap. When it’s
tight, the arrows on the cap should
line up with the overflow tube on the
reservoir filler neck.
Coolant High Fill Reservoir
Pressure Cap
I
When you replace your coolant high fill
reservoir pressure cap, an AC@ cap is
recommended. Engine
coolant temperature
is
controlled by a thermostat in the engine
coolant
system. The thermostat sfops
the flow of coolant through the radiator
until the .coolant reaches a preset
temperature.
When you replace your thermostat, -an
AC* thermostat is recommended.

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How To Check Power Steering Fluid
Unscrew the cap and wipe the dipstick
with a clean-rag. Replace the cap and
completely tighten
it. Then remove the
cap again and look
at- the fluid level on
the dipstick,
When .the engine imnpartrnent is hot,
the level should be at the HOT or H
mark.
cool, the level should be atthe FULL
COLD or C mark.
When the engine compartment is
What t,o Add:
Refer to the Maintenance Schedule- to
determine what.kind
of fluid to use. 'See.
the
Index under Fluids G Lubricants.
II NOflCE
Windshield Washer Fluid
To Add:
Open t,he.cap labeled WASHER .
FLUID ONLY. Add washer fluid until
the^ bottle is full.
.

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Brake Master Cylinder
Your brake master cylinder is filled with
DOT-3 brake fluid.
There are only two reasons why the
brake fluid level
in your master cylinder
might go down. The first is that the
brake fluid goes down to an acceptable
level during normal brake lining wear.
When new
linings are put in, the fluid
level goes back up.
The other reason is that fluid is Iealring
out
of the brake system. If it is, you
should have your brake system fixed,
since
a leak means that sooner or later
your brakes won’t work well, or won’t
work at all.
So, it isn’t a good idea to “top off” your
brake fluid. Adding brake fluid won’t
correct
a leak. If you add fluid when
your linings are worn, then you’ll have
too much fluid when you get new brake
linings. You should add (or remove)
brake fluid,
as necessary, only when
work
is done on the brake hydraulic
system.

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.-
WETen your brake fluid falls to a.low
level,
your brake warning light,
SERVICE ABS light and SERVICE
ASR light will come on. The- anti-lock
brake and .acceleration
slip regulation
systems are disabled when your brake
flu.id falls to
it low level. See thedndex
under
Brake System Warning Light;
To Add Brake Fluid:
Lift the cap and pour in fluid to the
MAX mark on the master cylinder. Do
not oveffiI1.
&%at to Add:
When you do need brake fluid, use-
)nly
DOT-3 brake fluid-such as
lelcrr Supreme 1P (GM Part No.
.052535). Use new brake fluid from a
'eded. container only.
NOTlCE
Replacing Brake System Parts
The braking system on a modern
vehicle is
complex. Its many parts have
to be
of top quality -and work well
together if the vehicle is to haye really
good braking. Vehicles we design and
test have top-quality GM brake-parts in
the&, as
your Corvette does when it is
new. When you replace parts of your
braking 'system-for example, when
your brakelinings wear down and you
have to have new ones put in-be sure
you get new genuine GM replacement
parts. If.you don't, your brakes may no
longer work properly. For example, if
someone.puts
in b.r&e linings that are
wrong for your vehicle, .the balance
between your
front and rear brakes can
change, for the worse. The braking
performance
you've come to expect can
change in many other ways if.-someone
puts
in the wrong replacement brake
parts.
27 I