GMC 2003 Savana Owner's Manual page 45

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CAUTION:
The body structure of a young child is quite
unlike that of an adult or older child, for whom
the safety belts are designed. A young child's
hip bones are still so small that the vehicle's
regular safety belt may not remain low on the
hip bones, as it should. Instead, it may settle
up around the child's abdomen. In a crash, the
belt would apply force on a body area that's
unprotected by any bony structure. This alone
could cause serious or fatal injuries. Young
children always should be secured in
appropriate child restraints.
Cargo Vans with a Passenger Air Bag
and without an Air Bag Off Switch
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CAUTION:
Children who are up against, or very close to, an
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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