Saturn 2008 VUE Green Line Hybrid Owner's Manual page 266

CAUTION:
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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.
Turn the pressure cap slowly counterclockwise
about one-quarter of a turn. If you hear a hiss,
wait for that to stop. This will allow any pressure
still left to be vented out the discharge hose.
2. Then keep turning the pressure cap slowly, and
remove it.
5-28
1. You can remove the
coolant surge tank
pressure cap when
the cooling system,
including the coolant
surge tank pressure
cap and upper radiator
hose, is no longer hot.
3. Fill the coolant surge tank with the proper
®
DEX-COOL coolant mixture, to between the
MIN and MAX lines.
4. With the coolant surge tank pressure cap off, start
the engine and let it run until you can feel the upper
radiator hose getting hot. Watch out for the engine
cooling fan.
By this time, the coolant level inside the coolant
surge tank may be lower. If the level is lower, add
more of the proper DEX-COOL
to the coolant surge tank until the level reaches
between the MIN and MAX lines.
5. Then replace the pressure cap. Be sure the
pressure cap is hand-tight.
®
coolant mixture