Chevrolet 2003 Tahoe Owner's Manual page 430

Turn the wheel wrench clockwise to raise the jack lift
head to the lifting point.
If your vehicle has wheel
nut caps, loosen them by
turning the wheel
wrench counterclockwise.
If you have a center
cap with wheel nut caps,
the wheel nut caps
are designed to remain
with the center cap.
Remove the center cap.
If the wheel has a smooth center piece, place the chisel
end of the wheel wrench in the slot on the wheel and
gently pry out.
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