Pontiac Grand Prix 2007 Owner's Manual page 378

Thermostat Housing
378
4. After the engine
cools, open the
coolant air bleed
valve located on the
thermostat housing
near the upper
radiator hose.
3800 V6 Supercharged Engine shown, 3800 V6
Engine similar
5. Fill the radiator with the proper DEX-COOL
coolant mixture, up to the base of the filler
neck. See Engine Coolant on page 366
for more information about the proper coolant
mixture.
If you see a stream of coolant coming from
the air bleed valve, close the valve. Otherwise,
close the valve after the radiator is filled.
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