1997 CHEVROLET EXPRESS engine coolant

Downloaded from www.Manualslib.com manuals search engine Cooling System
When you decide it’s safe to lift the hood, here’s what
you’ll see:
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.
The coolant level should be at or above the FULL
COLD mark.
5-14

Downloaded from www.Manualslib.com manuals search engine 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. Heater and radiator
hoses, and other engine
parts, can be
very hot. Don’t touch them. If you
do, you can be burned.
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.
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.

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 the
FULL COLD mark, add a 50/50 mixture of
dean water (preferably distilled) and DEX-COOL@
(silicate-free) antifreeze at the coolant recovery tank. (See
“Engine Coolant” in the Index for more information.)
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.
CAUTION: (Continued) 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@ coolant.
I 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.
5-16

Downloaded from www.Manualslib.com manuals search engine . . . :
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.
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 mix
directly to the radiator, but be sure the cooling system is
cool before you do it.

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.)
' 2. Then keep turning the pressure cap, but now push
down
as you turn it. Remove the pressure cap.
If you hear a hiss, wait for that to stop. A hiss means
there is still some pressure left.
5-19

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.
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.
5-20

Downloaded from www.Manualslib.com manuals search engine 6.
7.
Start the engine and let it run until you can feel the
upper radiator hose getting hot. Watch out for the
engine fan.
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.

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.
6-2
6-3
6-5
6-5
6-7
6-1 1
6-12 6-17
6-18
6-22
6-22
6-25
6-26 6-26
6-27
6-28 6-32 Service
Fuel (Gasoline Engine)
Fuels in Foreign Countries
Filling Your Tank
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
6-40
6-4
1
6-49
6-50
6-54
6-55
6-55
6-55
6-56
6-57
6-5 8
6-59
6-63
6-66
6-67 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
Capacities and Specifications
Air Conditioning Refrigerants
Lamp and Bulb Data