GMC 2009 Sierra - Manual (Page 68)

The passenger sensing system works with sensors that
are part of the right front passenger’s seat and safety belt.
The sensors are designed to detect the presence of a
properly-seated occupant and determine if the right front
passenger’s frontal airbag should be enabled (may
inflate) or not.
Accident statistics show that children are safer if they are
restrained in the rear rather than the front seat.
We recommend that children be secured in a rear seat,
including: an infant or a child riding in a rear-facing child
restraint; a child riding in a forward-facing child seat; an
older child riding in a booster seat; and children, who are
large enough, using safety belts.
A label on your sun visor says, “Never put a rear-facing
child seat in the front.” This is because the risk to the
rear-facing child is so great, if the airbag deploys.
{ CAUTION:
A child in a rear-facing child restraint can be
seriously injured or killed if the right front
passenger’s airbag inflates. This is because
the back of the rear-facing child restraint
would be very close to the inflating airbag.
Even though the passenger sensing
system is designed to turn off the right
front passenger’s frontal airbag if the
system detects a rear-facing child
restraint, no system is fail-safe, and no
one can guarantee that an airbag will not
deploy under some unusual circumstance,
even though it is turned off. We
recommend that rear-facing child
restraints be secured in a rear seat, even if
the airbag is off.
If you secure a forward-facing child
restraint in the right front seat, always
move the front passenger seat as far back
as it will go. It is better to secure the child
restraint in a rear seat.
1-64