Pontiac 2003 Montana Owner's Manual page 80

5. To tighten the belt, pull its free end while you push
down on the child restraint. If you're using a
forward-facing child restraint, you may find it helpful
to use your knee to push down on the child
restraint as you tighten the belt.
d. Push and pull the child restraint in different
directions to be sure it is secure.
To remove the child restraint, just unbuckle the vehicle's
safety belt. It will be ready to work for an adult or
larger child passenger.
4. Buckle the belt. Make sure the release button is
positioned so you would be able to unbuckle the
safety belt quickly if you ever had to.
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