GMC Sierra 2000 Owner's Manual page 264

6. Replace the wheel nuts
with the rounded end of
the nuts toward the
wheel. Tighten each
wheel nut by hand using
the wheel wrench until
the wheel is held against
the hub.
Front Position
7. Lower the vehicle by rotating the ratchet and
wheel wrench counterclockwise. Lower the
jack completely.
Rear Position
5-29