GMC 2003 Sierra 1500 Pickup Owner's Manual page 537

CAUTION: (Continued,
Even though
the
passenger sensing system is
designed to turn
off
the passenger's frontal air
bag if the system detects a rear-facing child
restraint, no system is fail-safe, and no one
can guarantee that
an
air
bag
will not deploy
under some unusual circumstance, even
though it is turned
off.
General Motors,
therefore, recommends that rear-facing child
restraints be secured in
the
rear seat whenever
possible, even if the air bag is off.
The passenger sensing system
is
designed to turn
off
the right front passenger's frontal air bag if:
the right front passenger seat is unoccupied
the system determines that an infant
is
present in a
the system determines that a small child is present
the system determines that
a
small child
is
present
a right front passenger takes hislher weight
off
of
the right front passenger seat is occupied by a
rear-facing infant seat
in a forward-facing child restraint
in a booster seat
the seat for a period of time
smaller person, such as a child who has outgrown
child restraints
or if there is a critical problem with the air bag
system or the passenger sensing system.
For some children who have outgrown child restraints
and for very small adults, the passenger sensing system
may or may not turn off the right front passenger's
frontal air bag, depending upon the person's seating
posture and body build. Everyone in your vehicle
who has outgrown child restraints should wear a safety
belt properly
-
whether or not there is an air bag
for that person.
2