Depending on accessibilty you turn it counterclockwise (looking from the front of the car). Usually use a socket and breaker bar but sometimes an extension is required. If stuff like radiator shroud or whatever is in the way you'll have to remove that first.
If you have an air impact wrench you can usually rattle it off. If the crank turns while attempting to loosen the bolt you have to block the flywheel/flexplate at the ring gear.
but in a pinch, or yu don't have a breakover or can't find that socket you need...?
one end of a 4-way lug wrench...there is a socket that fits - if the radiator is removed first, you'll need a lot of room. The good thing about using it is ... you can shock it, by hitting one of the cross bars with a hammer and not feel like a caveman.
This message has been edited by beoweolf on Jul 30, 2009 4:59 PM