Pontiac 2008 Grand Prix Owner's Manual page 371

Once you have removed the wheel cover, use the
following procedure to remove the flat tire and install the
spare tire.
1. It is recommended that you do a safety check
before preceding. See Changing a Flat Tire on
page 5-96 for more information.
2. Set the park brake
firmly.
3. Turn the wheel wrench
once on each wheel
nut to loosen them. Do
not remove them yet.
4. Find the jacking location located on the underside
of the rocker trim using the diagram. For jacking at
the vehicle's front location, put the jack lift head (C)
about 6 inches (15 cm) from the rear edge of the
front wheel opening (B). Line up the jack with the
arrow (A) as shown.
5-101