Hummer 2006 H2 Owner's Manual page 421

4. Assemble the jack and tools as follows:
Front Flat Tire: Attach the jack handle with the
hook end connected to the u-hook/clevis on
the jack. Slide the wheel wrench onto the jack
handle extension.
Rear Flat Tire: Assemble the jack together with the
jack handle and the jack handle extensions.
Press the retention clip on the jack handle extension
(arrow) so it engages into the jack handle. Slide
the wheel wrench onto the jack handle extension.
5. Turn the wheel wrench clockwise to raise the jack
head to the lifting point.
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