1993 CHEVROLET ASTRO PASSENGER engine coolant

Downloaded from www.Manualslib.com manuals search engine If the overheat warning continues, there's one more thing you can try. You
can add the proper coolant mix directly to the radiator, but be sure the
cooling
system is cool before you do it.
I CAUTION
II
A
Steam and scalding liquids from a hot cooling system can blow out
and burn you badly. They are under pressure, and
if you turn the
radiator pressure cap-even a little-they can come out at high
speed. Never
turn the pressure cap when the cooling system,
including the radiator pressure cap, is hot. Wait
for the cooling
system and radiator pressure cap
to cool if you ever have to turn
the pressure cap.
I A
PO425
5-1 3

Downloaded from www.Manualslib.com manuals search engine Problems on #he Road
How to Add Coolant to the Radiator
PO422
1. You can remove the radiator pressure cap when the cooling system,
including the radiator pressure cap
and upper radiator hose, is no longer
hot. Turn the pressure cap slowly to the left 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 SOt-t~e
pressure left.
2. Then keep turning the pressure cap, but now push down as you turn it.
Remc- the pressure cap.
PO423
3. Fill the radiator with the proper mix, up to the base of the filler neck,
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Downloaded from www.Manualslib.com manuals search engine 4. Then fill the coolant recovery tank to FULL.
t
PO658
5. Put the cap back on the coolant recovery tank, but leave the \
radiator
6. Start the engine and let it run until you can feel the upper radiator hose
7. By this time, the coolant level inside the radiator filler neck may be
pressure cap
off.
getting hot.
Watch out for the engine fan.
lower. If the level
is lower, add more of the proper mix through the filler
neck until the level reaches the base of the filler neck.
I PO407
8. Then replace the pressure cap. Be sure the arrows on the pres\
sure cap
line up like this.
5-1 5

Downloaded from www.Manualslib.com manuals search engine Service & Appearance Care
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......... ..... -&-.A- -
I 5, "9
. .
Here you will find information about the care of your vehicle \
. This Section
begins with service and fuel information. and then
it shows how to check
important fluid and lubricant levels
. There is also technical information about
your vehicle. and a section devoted to its appearance care
.
Service ........................................................................\
........................................... 6-3
Fuel
........................................................................\
................................................ 6-4
Checking Things Under the Hood
....................................................................... \
6-8
Hood Release
........................................................................\
............................ 6-8
Engine
Oil ........................................................................\
.................................. 6-9
Engine Cover
........................................................................\
........................... 6-15
Air Cleaner
........................................................................\
............................... 6-19
Automatic Transmission Fluid
........................................................................\
. 6-20
Rear Axle
........................................................................\
................................. 6-23
All-Wheel Drive
........................................................................\
........................ 6-23
Transfer Case
........................................................................\
.......................... 6-23
Front Axle
........................................................................\
................................. 6-24
Engine Coolant
........................................................................\
........................ 6-26
Power Steering Fluid
........................................................................\
............... 6-30
Windshield Washer Fluid
........................................................................\
......... 6-31
Brake Master Cylinder
........................................................................\
............. 6-32
6-1

Downloaded from www.Manualslib.com manuals search engine A
Things that burn can get on hot engine parts and start a fire. These
include liquids like gasoline, oil, coolant, brake fluid, windsh\
ield
washer and other fluids, and plastic or rubber. You or others could
be burned. Be careful not to drop or spill things that will burn onto a
hot engine.
I I
Before closing the hood, be sure all the filler caps are on properly.
I
~
K3607
Then lift the hood to relieve pressure on the hood prop. Remove the hood
prop from the slot in the hood and return the prop to its retainer. Then just
let the hood down and close
it firmly.
Engine Oil
It’s a good idea to check your engine oil every time you get fuel. In order to
get an accurate reading, the oil must be warm and the vehicle\
must be on level ground.
6-9

Downloaded from www.Manualslib.com manuals search engine Engine Coolant
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A
1
PO453
The following explains your cooling system and how to add cool\
ant when it is low.
If you have a problem with engine overheating, see "Engine
Overheating" in the Index.
The proper coolant for your vehicle will:
Give freezing protection down to -20°F (-29°C) or -40°F (-40°C) for
Canadian vehicles and vehicles with the cold climate option.
Give boiling protection up to 258°F (125°C).
Protect' against rust and corrosion.
Help keep the proper engine temperature.
Let the warning gages work as they should,
What to Use:
Use a mixture of clean water (preferably distilled) and antifreeze that meets
"GM Specification 6038-M," which won't damage aluminum parts.
Also use
GM Engine Coolant Supplement (sealer) with a complete coolant \
change.
If
you use these, you don't need to add anything else.
6-26

Downloaded from www.Manualslib.com manuals search engine If you have to add coolant more than four times a year, have your dealer
check your cooling system.
I
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 harm1
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Downloaded from www.Manualslib.com manuals search engine Service & Appearance Care
Adding Coolant
PO408
TO Check Coolant: When your engine is cold, the coolant level should be at
COLD LEVEL, or a little higher.
When your engine is warm, the level should be up
to COLD LEVEL, or a
little higher.
CAUTION
To Add Coolant: If you need more coolant, add the proper mix at the
coolant recovery tank.
Turning the radiator pressure cap when the engine and radiator \
are
hot can allow steam and scalding liquids to blow out and burn you
badly. With the coolant recovery tank, you will almost never h\
ave
to
add coolant at the radiator. Never turn the radiator pressure
cap-even a little-when the engine and radiator are hot.
I
Add coolant mix at the recovery tank, but be careful not to spill it.
CAUTION
i 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.
6-28