GMC 2002 Yukon XL Owner's Manual page 63

CAUTION:
Children who are up against, or very close to, any
air bag when it inflates can be seriously injured
-
or killed. Air bags plus lap shoulder belts offer
outstanding protection for adults and older
children, but not for young children and infants.
Neither the vehicle's safety belt system nor its air
bag system is designed for them. Young children
and infants need the protection that a child
restraint system can provide.
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