GMC 2003 Yukon Owner's Manual page 437

7. Turn the wheel wrench counterclockwise to lower
the vehicle. Lower the jack completely.
6. After mounting the
spare, put the wheel
nuts back on with the
rounded end of the nuts
toward the wheel.
Tighten each wheel nut
by hand. Then use the
wheel wrench to tighten
the nuts until the wheel
is held against the hub.
8. Tighten the nuts firmly in a crisscross sequence
as shown by turning the wheel wrench clockwise.
{
CAUTION:
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" in the Index 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" in the index for the wheel nut torque
specification.
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