Hummer 2004 H2 Owner's Manual page 165

CAUTION:
{
If the right front passenger's air bag is turned
off for a person who isn't in a risk group
identified by the national government, that
person won't have the extra protection of an
air bag. In a crash, the air bag wouldn't be able
to inflate and help protect the person sitting
there. Don't turn off the passenger's air bag
unless the person sitting there is in a risk
group. See Air Bag Off Switch in the Index
for more on this, including important safety
information.
CAUTION:
{
If the air bag readiness light ever comes on
when you have turned off the air bag, it means
that something may be wrong with the air bag
system. The right front passenger's air bag
could inflate even though the switch is off. If
this ever happens, don't let anyone whom the
national government has identified as a member
of a passenger air bag risk group sit in the right
front passenger's position (for example, don't
secure a rear-facing child restraint in the right
front seat) until you have your vehicle serviced.
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