Pontiac G5 2009 Owner's Manual page 335

4. Turn the wheel wrench counterclockwise to loosen
all the wheel nuts. Do not remove them yet.
Notice: Make sure that the jack lift head is in the
correct position or you may damage your vehicle.
The repairs would not be covered by your warranty.
5. Position the jack lift head at the jack location
nearest the flat tire. The front location is about
8 inches (20 cm) behind the front wheel opening.
The rear location is about 4 inches (10 cm) in front
of the rear wheel opening.
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