GMC Yukon XL Denali 2005 Owner's Manual page 57

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