Page 214 of 388
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.
Page 215 of 388
Downloaded from www.Manualslib.com manuals search engine 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(s).
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.
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Page 216 of 388
Downloaded from www.Manualslib.com manuals search engine 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.
How to Add Coolant to the Radiator - LT1
(Code P) Engine Only
NOTICE:
The LT1 Engine (Code P) has a specific radiator
fill procedure. Failure
to follow this procedure
could cause your engine to overheat
and be
severely damaged.
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Page 217 of 388
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 pressure cap, but now push
down
as you turn it. Remove the pressure cap.
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Page 218 of 388
Downloaded from www.Manualslib.com manuals search engine 3. After the engine cools, open the air bleed valves on
the heater return hose and water pump inlet. 4.
5.
6.
7.
Fill with the proper mix. Add coolant until you see a
steady stream of coolant coming from the bleed
valves.
Close the bleed valves.
Continue to fill the radiator up to the base of the
filler neck.
Rinse or wipe the spilled coolant from the engine and compartment.
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Page 219 of 388
Downloaded from www.Manualslib.com manuals search engine 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.
10. Then fill the coolant recovery tank to the proper
level.
9. Shut the engine off and replace the pressure cap. Be
sure the arrows
on the cap line up like this.
For a complete drain, flush and refill, see your Chevrolet
dealer or a Chevrolet Service Manual.
To purchase a
service manual, see “Service Publications’’
in the Index.
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Page 260 of 388

Downloaded from www.Manualslib.com manuals search engine Engine Coolant
The following explains your cooling system and how to
add coolant when it
is low. If you have a problem with
engine overheating or if you need to add coolant to your
radiator, see “Engine Overheating”
in the Index.
The proper coolant for your Chevrolet will:
Give freezing protection down to -34°F (-37°C).
Give boiling protection up to 262” F ( 128 * C).
Protect against rust and corrosion.
0 Help keep the proper engine temperature.
0 Let the warning lights work as they should.
What to Use
Use a mixture of one-half clean water (preferably
distilled) and one-half antifreeze that meets
“GM
Specification 1825-M,” which won’t damage aluminum
parts.
You can also use a recycled coolant conforming to
GM Specification 1825-M with a complete coolant flush
and refill. If you use this mixture, you don’t need to add
anything else.
I NOTICE:
If you use an improper coolant mix, your engine
could overheat and
be badly damaged. The
repair
cost wouldn’t be covered by your
warranty.
Too much water in the mix can freeze
and crack the engine, radiator, heater core and
other parts.
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Page 261 of 388
Downloaded from www.Manualslib.com manuals search engine Adding Coolant
To Check Coolant
When your engine is cold, check the dipstick on the cap
of the coolant recovery tank. The coolant level should
be at
COLD, or a little higher. When your engine is
warm, the level on the dipstick should be up to the HOT,
or a little higher.
5.7L LT1 Engine Only
If this light comes on, it means you’re low on engine
coolant.
To Add Coolant to the Recovery Tank
If you need more coolant, add the proper mix ut the
coolant
recovery tank, but only when your engine is
cool. If the tank is very low or empty, also add coolant
to the radiator, see “Engine Overheating” in the Index
for information.
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