1994 CHEVROLET ASTRO PASSENGER radiator cap

Downloaded from www.Manualslib.com manuals search engine When you decide it’s safe to lift the hood, here’s what you’ll see:
A. Coolant recovery tank
B. Radiator pressure cap
C. Engine fan
If the coolant inside the coolant recovery tank is boiling, don’t do anything
else until it cools down.
The
coolant level should be at or above FULL. 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.
NOTICE:
Engine damage from running your engine without coolant isn’t \
covered by your warranty.
If there seems to be no leak, start the engine again. See if the fan speed
increases when idle speed
is doubled by pushing the accelerator pedal down.
If it doesn’t, your vehicle needs service. Turn
off the engine.
5-13

Downloaded from www.Manualslib.com manuals search engine 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 some
pressure left.
2. Then keep
turning
the
I
pressure cap, but
now push down
as you turn it.
Remove the
pressure cap.
3. Fill the Radiator
with
the proper
mix, up to the
base
of the filler
neck.
5-16

Downloaded from www.Manualslib.com manuals search engine I
4. Then fill the
coolant recovery tank to
FULL.
5. Put the cap back
on the coolant
recovery tank,
but leave the
radiator pressure
cap off.
6. Start the engine
and let it run until
you can feel the
upper radiator
hose getting hot.
Watch out for
the
engine fan.
7. By this time the coolant level inside the radiator filler neck may be
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.
5-17

Downloaded from www.Manualslib.com manuals search engine Radiator Pressure Cap
NOTICE:
Your radiator 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 on the radiator filler neck.
When you replace
your radiator pressure
cap, an
AC@ cap is
recommended. See
“Service Replacement
Part and Filler
Recommendations”
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.
6-29

Downloaded from www.Manualslib.com manuals search engine I NOTICE:
When adding power steering fluid or making a complete fluid
change, always use the proper fluid. Failure to use the proper
fluid can cause leaks and damage hoses and seals.
Windshield Washer Fluid
To Add
Open the cap labeled
WASHER FLUID
ONLY. Add washer
fluid until the tank is
full.
NOTICE:
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.
Fill your washer fluid tank only 3/4 full when it’s very cold.
This allows for expansion, which could damage the tank if it is
completely full.
Don’t use radiator antifreeze in your windshield washer. It
can damage your washer system and paint.
6-31

Downloaded from www.Manualslib.com manuals search engine NAME
DRL**
PWR
MIRRORS*
TRAILER*
CIRCUITS
PROTECTED
Canadian Daytime Running
Lights
Power Mirror
Trailer Wiring Harness
FUSE
10 Amp
3 Amp
30 Amp
*In-line fuse
**Canada only
***In-line fuse (certain models)
Service Replacement Part and Filter
Recommendations
ENGINE (VIN)
OIL FILTER
AIR CLEANER FILTER
PCV VALVE
SPARK PLUGS*
FUEL FILTER
RADIATOR CAP 4.3L (2)
PF52
A773C
CV789C
.CR43TSM
GF48
1
RC36
*Use copper-cored resistor type spark plugs.
CIRCUIT
BREAKER
4.3L
(W)
PF52
A1163C
cv774c
.CR43TSM GF48
1
RC36
6-74

Downloaded from www.Manualslib.com manuals search engine Explanation Of Scheduled Maintenance Services
Below are explanations of the services listed in the maintenance charts.
The proper fluids and lubricants to use are listed
in this section. Make sure
whoever services your vehicle uses these. All parts should
be replaced and
all necessary repairs done before you or anyone else drives the vehicle.
1.
2.
3.
4.
5.
ENGINE OIL AND OIL FILTER CHANGE“ - ALWAYS USE
API SERVICE
SH OR SG ENERGY CONSERVING I1 OILS OF THE
PROPER VISCOSITY. The
“SH7 or “SG7 designation may be shown
alone or in combination with others, such as “SWCD”, or
“SH, SG,
CD,” or “SG/CD”, etc. To determine the preferred viscosity oil for your
vehicle’s engine see “Engine Oil”
in the Index.
CHASSIS LUBRICATION - Lubricate the front suspension,
steering linkage, transfer case shift linkage, parking brake cab\
le guides,
and brake pedal springs at the intervals specified on the proper
maintenance schedule, or at every engine oil change, whichever \
comes
first.
Ball joints and king pin bushings should not be lubricated unless their
temperature is
10°F (-1 2°C) or higher. When the weather is cold, let
them warm up before lubricating them or they could be damaged.\

Also, be sure to check all the vehicle fluid levels at this \
time.
COOLING SYSTEM SERVICE* - Drain, flush and refill the
system
with new or approved recycled coolant conforming to “GM
Specification 6038-M”. See “Engine Coolant”
in the Index for the
proper coolant and mixture to use
in your vehicle.
Also inspect the hoses and replace them
if they are cracked, swollen, or
deteriorated. Clean the outside of the radiator and air conditioning
condenser. Wash the radiator neck.
To ensure proper operation,
pressure test the radiator and cap.
AIR CLEANER FILTER REPLACEMENT* - Replace at
specified intervals. Ask your dealer for the proper replacement
intervals for your driving conditions.
FRONT WHEEL BEARING REPACK
(2-WHEEL DRIVE ONLY)
- Clean and repack the front wheel
bearings at each brake relining,
or at the specified interval, whichever
comes first.
* An Emission Control Service
7-7

Downloaded from www.Manualslib.com manuals search engine Exhaust System ................................................. 6-43
F
FanNoise ...................................................... 5-18
Filter Replacement Chart
.......................................... 6-74
Finish
Care
........................................................ 6-59
Damage
..................................................... 6-61
Automatic Transmission
........................................ 6-20
Brake
....................................................... 6-32
Capacities
................................................... 6-69
CoolantRecovery
............................................. 5-14
FrontAxle
................................................... 6-25
Leak Check
.................................................. 6-36
Powersteering
............................................... 6-30
Radiator
..................................................... 5-15
Rear Axle
................................................... 6-24
RecommendedFluids
.......................................... 7-13
Transfercase
................................................ 6-24
Windshield Washer
............................................ 6-31
FogLamps
..................................................... 2-42
Four-wheel Anti-lock
............................................. 4-7
Frontseats
...................................................... 1-2
Fuel
........................................................... 6-3
FillingYourTank
.............................................. 6-5
Foreign Countries
.............................................. 6-5
Gage
....................................................... 2-61
Gasolines for Cleaner Air
........................................ 6-4
Tankcapacity ................................................ 6-69
Fuses and Circuit Breakers
........................................ 6-72
FuseBlock
.................................................. 6-67
Headlights
................................................... 6-66
Power Windows and Other Power Options
......................... 6-66
Trailer Wiring Harness
......................................... 6-66
Windshield Wipers
....................... .............. 6-66
Fluid
G
Gages ......................................................... 2-61
Coolant Temperature Gage
...................................... 2-63
FuelGage
................................................... 2-61
Odometer
................................................... 2-53
Oil Pressure Gage
............................................. 2-62
Speedometer
................................................. 2-53
Trip Odometer
................................................ 2-53
Voltmeter
.................................................... 2-64
Gasolines for Cleaner Air
.......................................... 6-4
Hatch Release Switch ............................................. 2-28
HalogenBulbs
........................................ ....... 6-36