Pontiac 2007 G6 - Manual (Page 349)

2. Then keep turning
the pressure cap
slowly, and
remove it.
3. Fill the coolant surge tank with the proper
mixture, to the FULL COLD mark. Wait about
five minutes, then check to see if the level is
below the mark. If the level is below the FULL
COLD mark, add additional coolant to bring the
level up to the mark. Repeat this procedure
until the level remains constant at the FULL
COLD mark for at least five minutes.
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 fans.
By this time, the coolant level inside the coolant
surge tank may be lower. If the level is lower
than the FULL COLD mark, add more of the
proper mixture to the coolant surge tank until
the level reaches the FULL COLD mark.
5. Then replace the pressure cap. Be sure the
pressure cap is hand-tight and fully seated.
Power Steering Fluid
See Engine
Compartment
Overview on page 318
for reservoir location.
349