Hummer 2007 H3 - Manual (Page 13)

Head Restraints
Adjust the head restraint so that the top of the
restraint is at the same height as the occupant’s
head. This position reduces the chance of a
neck injury in a crash.
Pull the head restraint
up to raise it. To lower
the head restraint,
press the button,
located on the top
of the seatback,
and push the head
restraint down.
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