1998 GMC SAVANA radiator

Cooling System (Gasoline Engines)
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.
e;- ..
The coolant level should be at or above the FULL
COLD mark.
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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:
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 engine cooling 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.
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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
clean water (preferably distilled) and DEX-COOL@
engine coolant at the coolant recovery tank. (See
“Engine Coolant“
in the Index for more information.)
A C”UT1 )N:
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 mixture will. Your vehicle’s coolant
warning system is set for the proper coolant
mixture. With plain water or the wrong mixture,
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 mixture 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 mixture.
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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.
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.
-
A CAUTION:
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) CAUTION: (Continued)
pressure cap
-- even a little -- they 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.
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Haw 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 ROW push
down as you turn it. Remove the pressure cap.
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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
COLD mark.
5. Put the cap back on the coolant recovery tank, but
leave the radiator pressure cap off.
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6.
7.
Start the engine and let it run until you can feel the
upper radiator hose getting
hot. Watch out for the
engine cooling 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.
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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
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vehicle, and a part devoted to its appearance care.
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
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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 (VJN)
Electrical System
Replacement Bulbs
Capacities and Specifications
Normal Maintenance Replacement Parts
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