Top Strap - Chevrolet kodiak 2004 Owner's Manual

If your vehicle has an air-suspension seat in the right
front passenger's position, do not secure a child restraint
there. Here is why:
CAUTION:
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A child restraint cannot be secured properly in
an air-suspension type seat. This is because
an air-suspension seat is designed to move up
and down for an adult passenger. Don't use a
child restraint in an air-suspension seat.
Wherever you install it, be sure to secure the child
restraint properly.
Keep in mind that an unsecured child restraint can
move around in a collision or sudden stop and injure
people in the vehicle – even when no child is in it.
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Top Strap

Some child restraints have a top strap, or "top tether,"
which can help hold the child restraint during a
crash. For it to work, a top strap must be properly
anchored to the vehicle. Some child restraints with a top
strap are designed to be used whether or not the top
strap is anchored. Others require that the top strap
be anchored. Also, a national or local law may require
that the top strap be anchored.
If your child restraint top strap must be anchored, then
don't use the restraint in this vehicle, because in it,
a top strap cannot be properly anchored.