Hummer H2 2010 Owner's Manual page 473

3. Pull off the license plate holder from the spare tire.
4. Attach the wheel wrench to the wheel wrench
extender to remove the wheel nuts. Turn the wheel
wrench with the wheel wrench extender
counterclockwise to loosen the wheel nuts.
5. Remove the wheel nuts holding the spare tire onto
the tire carrier.
6. Pull off the spare tire and gently lower it to the
ground. Set it next to the flat tire.
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