GMC 1999 Suburban Owner's Manual page 271

7. Replace the wheel
Front Position
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.
Rear Position
8. Lower the vehicle by rotating the ratchet and
wheel wrench counterclockwise. Lower the
jack completely.
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9. Tighten each
wheel nut by
rotating the wheel
wrench clockwise.
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