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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
fan(s).
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.
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 likl
this.
How to Add Coolant to the Radiator
(5.7L LT1 (Code P) Engine)
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.
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