How To Add Coolant To The Radiator - Chevrolet 1997 Blazer Owner's Manual

How to Add Coolant to the Radiator
1 . You can remove the pressure cap when the cooling
system, including the 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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