GMC 2006 Sierra - Manual (Page 216)

Never put a rear facing child restraint in the right front
passenger seat unless the airbag is off. Here is why:
{ CAUTION:
Even though the passenger sensing system is
designed to turn off the 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 transported in vehicles with a rear
seat that will accommodate a rear-facing child
restraint, whenever possible.
If the word ON or the on symbol is lit on the passenger
airbag status indicator, it means that the right front
passenger’s frontal airbag is enabled (may inflate).
{ CAUTION:
If the on indicator comes on when you have a
rear-facing child restraint installed in the right
front passenger’s seat, it means that the
passenger sensing system has not turned off
the passenger’s frontal airbag. 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. Do not use a rear-facing
child restraint in the right front passenger’s seat
if the airbag is turned on.
If the word OFF or the off symbol is lit on the passenger
airbag status indicator, it means that the passenger
sensing system has turned off the right front passenger’s
airbag. See Passenger Sensing System on page 1-81 or
Airbag Off Switch on page 1-78 for more on this,
including important safety information.
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