Pontiac 2005 GTO Owner's Manual page 260

12. Lower the vehicle by turning the wheel wrench
counterclockwise. Lower the jack completely.
CAUTION:
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Incorrect wheel nuts or improperly tightened
wheel nuts can cause the wheel to come loose
and even come off. This could lead to an
accident. Be sure to use the correct wheel
nuts. If you have to replace them, be sure to
get new GM original equipment wheel nuts.
Stop somewhere as soon as you can and have
the nuts tightened with a torque wrench to the
proper torque specification. See Capacities
and Specifications on page 5-90 for wheel nut
torque specification.
Notice: Improperly tightened wheel nuts can lead
to brake pulsation and rotor damage. To avoid
expensive brake repairs, evenly tighten the wheel
nuts in the proper sequence and to the proper
torque specification. See Capacities and
Specifications on page 5-90 for the wheel nut
torque specification.
5-74
Notice: Wheel covers will not fit on your compact
spare. If you try to put a wheel cover on the compact
spare, you could damage the cover or the spare.
Do not try to put a wheel cover on your compact spare
tire. It will not fit. Store a wheel cover in the trunk
until you have the flat tire repaired or replaced.
13. Tighten the wheel nuts
firmly in a crisscross
sequence, as shown.