Page 225 of 402

Downloaded from www.Manualslib.com manuals search engine A
How to Add Coolant to the Coolant
Recovery Tank
If you haven’t found a problem yet, but the coolant level
isn’t at
FULL COLD, add a 50/50 mixture of clean
water (preferably distilled) and DEX-COOL ’ (orange-colored, silicate-free) antifreeze at the coolant
1 recovery tank. (See “Engine Coolant” in the Index
~ for more information.)
i
A CAUTION:
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. With
CAUTION: (Continued)
- - -
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
TM antifreeze.
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.
5-18
t
Page 226 of 402
Downloaded from www.Manualslib.com manuals search engine 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.
1
.
When the coolant in the coolant recovery tank is at
FULL COLD, 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.
5-19
Page 227 of 402
Downloaded from www.Manualslib.com manuals search engine 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 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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Page 228 of 402
Downloaded from www.Manualslib.com manuals search engine How to Add Coolant to the Radiator
(V6 Engine) Only
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.
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Page 229 of 402
Downloaded from www.Manualslib.com manuals search engine 3. Fill the radiator with the proper mix, up to the base
of the filler neck.
4. Then fill the coolant recovery tank to FULL COLD.
5. Put the cap back on the coolant recovery tank, but
leave the radiator pressure cap
off.
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Page 230 of 402
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
mix 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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Page 231 of 402
Downloaded from www.Manualslib.com manuals search engine How to Add Coolant to the Radiator
(V8 Engine Only)
NOTICE:
The LTl Engine (Code P) has a specific radiator
fill procedure. Failure
to follow this procedure
could cause your engine
to overheat and be
severely damaged.
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.
Page 232 of 402
Downloaded from www.Manualslib.com manuals search engine 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.
3. After the engine cools, open the air bleed valves on
the heater return hose and water pump inlet.
4. Fill with the proper mix. Add coolant until you see a
5. Close the bleed valves.
6. Continue to fill the radiator up to the base of the
7. Rinse or wipe the spilled coolant from the engine
and compartment.
8. Start the engine and allow it to run in idle for
approximately four minutes.
By this time, the
coolant level inside the radiator will be lower. Add
more
of the proper mix through the filler neck until
the level reaches the base of the filler neck.
steady stream
of coolant coming
from the bleed valves.
filler neck.
5-25