1998 CHEVROLET EXPRESS radiator cap

Downloaded from www.Manualslib.com manuals search engine Cooling System (Gasoline Engines)
When you decide it’s safe to lift the hood, here’s what
you’ll see:
The coolant level should be at or above the
FULL
COLD mark.
A. Radiator Pressure Cap
B. Coolant Recovery Tank
C. Engine
Fan(s)
If the coolant inside the coolant recovery tank is boiling,
don’t do anything else
until it cools down.
5-14

Downloaded from www.Manualslib.com manuals search engine I 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.
When the coolant in the coolant recovery tank
is at the
FULL COLD mark, start your vehicle.
If the overheat warning continues, there’s one more
thing you can try. You can add the proper coolant
mixture directly
to the radiator, but be sure the cooling
system is cool before you do it,
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
CAUTION: (Continued pressure cap
-- even
a lit 0- ey can come out
at high speed. Never turn the 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.
5-17

Downloaded from www.Manualslib.com manuals search engine How to Add Coolant to the Radiator
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 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.
5-18

Downloaded from www.Manualslib.com manuals search engine 3. Fill the radiator with the proper DEX-COOL@
coolant mixture,
up to the base of the filler neck.
(See "Engine Coolant" in the Index for more
information about the proper coolant mixture.)
4. Then fill the coolant recovery tank to the FULL
COLD mark.
5. Put the cap back on the coolant recovery tank, but
leave the radiator pressure
cap off.

Downloaded from www.Manualslib.com manuals search engine I .....
6. Start the engine and let it run until you can feel the
upper radiator hose getting hot. Watch out
for the
engine cooling 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 DEX-COOL@ coolant mixture
through the filler neck until the level reaches the
base of the filler neck.
8. Then replace the pressure cap. At any time during
this procedure
if coolant begins to flow out of the
filler neck, reinstall the pressure cap. Be sure the
arrows on the pressure cap line up like this.
5-20

Downloaded from www.Manualslib.com manuals search engine Section 6 Service and Appearance Care
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 part devoted to its appearance care.
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16
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1
Service
Fuel (Gasoline Engine)
Fuels in Foreign Countries (Gasoline Engines)
Filling Your Tank (Gasoline Engine)
Filling a Portable Fuel Container
Checking Things Under the
Hood
Noise Control System
Engine Oil (Gasoline Engine)
Air Cleaner (Gasoline Engines)
Automatic Transmission Fluid
Rear Axle
Engine Coolant
Radiator Pressure Cap
Thermostat
Power Steering Fluid
Windshield Washer Fluid
Brakes Battery 6-32
6-32
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1
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1
6-66
6-67
6- 69 Bulb Replacement
Halogen Bulbs
Windshield Wiper Blade Replacement
Tires Appearance Care
Cleaning the Inside of Your Vehicle
Cleaning the Outside
of Your Vehicle
Cleaning Aluminum Wheels (If Equipped)
Cleaning Tires
Sheet Metal Damage
Finish Damage Appearance Care Materials Chart
Vehicle Identification Number (VIN)
Electrical System
Replacement Bulbs Capacities and Specifications
Normal Maintenance Replacement Parts

Downloaded from www.Manualslib.com manuals search engine Adding Coolant
If you need more coolant, add the proper DEX-COOL'
coolant mixture at the coolant recovery tank.
I
Wrning 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 have
to add coolant at the radiator.
Never turn the radiator pressure cap
-- even a
little
-- when the engine and radiator are hot.
Add coolant mixture at the recovery tank, but be careful
not to spill it.
A 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.
Radiator Pressure Cap
The radiator pressure cap must be tightly installed with
the arrows
on the cap lined up with the overflow tube on
the radiator filler neck.
NOTICE:
Your radiator cap is a 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.
6-24

Downloaded from www.Manualslib.com manuals search engine Thermostat
Engine coolant temperature is controlled by a thermostat
in the engine cooling 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.
Power :ring !
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.
How To Check Power Steering Fluid
When the engine compartment is cool, wipe the cap
and the top of the reservoir clean, then 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.
The level should be at the
FULL COLD mark. If
necessary, add only enough fluid to bring the level up
to the mark.
To prevent contamination of brake fluid, never check or
fill the power steering reservoir with the brake master
cylinder cover
off.
6-25