GMC YUKON XL 2003 Manual page 84

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,
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the system determines that an infant is present in a
rear-facing infant seat,
the system determines that a small child is present
in a forward-facing child restraint,
the system determines that a small child is present
in a booster seat,
a right front passenger takes hidher weight off of
the right front passenger seat is occupied by a
the seat for a period of time.
smaller person, such as a child who has outgrown
child restraints or a very small person,
or if there is a critical problem with the air bag
system or the passenger sensing system.
When the passenger sensing system has turned off the
passenger's frontal air bag, the off indicator will light
and stay lit to remind you that the air bag is off.
The passenger sensing system is designed to turn off
the passenger's frontal air bag when a rear facing infant
seat, a forward-facing child restraint or a booster seat
is detected. If the child restraint has been installed
and the on indicator is lit, turn the vehicle off, remove
the child restraint from the vehicle and reinstall the
restraint following the child restraint manufacturer's
directions and refer to Securing a Child Restraint in the
Right Front Seat Position on page 1-64 of this manual.
If after reinstalling the child restraint and restarting
the vehicle, the on indicator is still lit, secure the child in
the child restraint in a rear seat position in the vehicle
and check with your dealer.
The passenger sensing system is designed to enable
(may inflate) the right front passenger's frontal air
bag anytime the system senses that a person of adult
size is sitting properly in the right front passenger's seat.
When the passenger sensing system has allowed the
air bag to be enabled, the on indicator will light and stay
lit to remind you that the air bag is active.
If a person of adult-size is sitting in the right front
passenger's seat, but the off indicator is lit, it could be
because that person isn't sitting properly in the seat.
If this happens, turn the vehicle off and ask the person
to place the seatback in the full upright position,
then sit upright in the seat, centered on the seat cushion,
with the person's legs comfortably extended. Restart
the vehicle and have the person remain in this position
for about two minutes. This will allow the system to
detect that person and then enable the passenger's
air bag.
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