Hummer 2006 H3 - Manual (Page 348)

4. Assemble the jack and tools as follows:
Front Tire Flat: If the flat tire is on a front tire of
the vehicle, you will need to use the jack handle
and both jack handle extensions. Attach the wheel
wrench to the jack handle extension. Attach the
jack handle to the jack. Position the jack on the front
lower control arm along the bar that runs front to
back. Turn the wheel wrench clockwise to raise
the vehicle. Raise the vehicle far enough off
the ground so there is enough room for the spare
tire to clear the ground.
Refer to the graphic above to locate the placement of
the jack if the flat tire is on the rear of the vehicle. Front Position
Rear Positions
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