GMC 2008 Envoy Denali Owner's Manual page 39

Infants and Young Children
Everyone in a vehicle needs protection! This includes
infants and all other children. Neither the distance
traveled nor the age and size of the traveler changes
the need, for everyone, to use safety restraints. In fact,
the law in every state in the United States and in
every Canadian province says children up to some
age must be restrained while in a vehicle.
CAUTION:
{
Children can be seriously injured or strangled if
a shoulder belt is wrapped around their neck
and the safety belt continues to tighten. Never
leave children unattended in a vehicle and never
allow children to play with the safety belts.
Every time infants and young children ride in vehicles,
they should have the protection provided by appropriate
restraints. Children who are not restrained properly can
strike other people, or can be thrown out of the vehicle.
In addition, young children should not use the vehicle's
adult safety belts alone; they need to use a child restraint.
CAUTION:
{
People should never hold an infant in their
arms while riding in a vehicle. An infant does
not weigh much — until a crash. During a
crash an infant will become so heavy it is not
possible to hold it. For example, in a crash at
only 25 mph (40 km/h), a 12 lb (5.5 kg) infant
will suddenly become a 240 lb (110 kg) force
on a person's arms. An infant should be
secured in an appropriate restraint.
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