Chevrolet Pontiac Wave 2007 Owner's Manual page 296

2. Then keep turning the pressure cap slowly, 3. Fill the coolant surge tank with the proper
and remove it. mixture to the Maximum mark on the
coolant surge tank. Wait about five minutes,
then check to see if the level is below the
mark. If the level is below the Maximum mark,
add additional coolant to bring the level up
to the mark. Repeat this procedure until
the level remains constant at the Maximum
mark for at least five minutes.
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