How To Add Coolant To The Radiator - GMC SAFARI 2004 Owner's Manual

How to Add Coolant to the Radiator

1. 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.
You can remove the
radiator pressure cap
when the cooling system,
including the radiator
pressure cap and upper
radiator hose, is no
longer hot.
2. Then keep turning the
pressure cap, but now
push down as you
turn it. Remove
the pressure cap.
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