Buick 2007 Terraza Owner's Manual page 430

How to Add Coolant to the Radiator
Notice: Your engine has a specific radiator fill
procedure. Failure to follow this procedure
could cause your engine to overheat and
be severely damaged.
Turn the pressure cap slowly counterclockwise.
If you hear a hiss, wait for that to stop. A hiss
means there is still some pressure left, close
the cap and wait for the system to cool down.
2. Keep turning the pressure cap. Remove the
pressure cap.
430
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.
CAUTION:
{
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. Do not spill
coolant on a hot engine.
3. Fill the radiator with the proper DEX-COOL
coolant mixture, up to the base of the filler
neck. See Engine Coolant on page 420
for more information about the proper coolant
mixture.
4. Rinse or wipe any spilled coolant from the
engine and the compartment.
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