Chevrolet 2001 Prizm Owner's Manual page 65

In Canada, the law requires that forward
child restraints have a top strap, and that the strap be
anchored. In the United States, some child restraints also
have a top strap. If your child restraint has a top strap,
it should be anchored.
Your vehicle has top strap anchors already installed for
the rear seating positions. You'll find them behind the
rear seat on the filler panel.
-
facing Anchor the top strap to one of these anchor points.
Be sure to use an anchor point located on the same
side of the vehicle as the seating position where the
child restraint will be placed. If you have an adjustable
head restraint, raise the head restraint and route the top
strap under it.
Once you have the top strap anchored, you'll be ready
to secure the child restraint itself. Tighten the top strap
when and as the child restraint manufacturer's
instructions say.
1-53