Chevrolet 1999 Prizm Owner's Manual page 50

CAUTION:
An unfastened shoulder harness clip won't help
keep the harness in place on the child's shoulders.
If the harness isn't on the child's shoulders, it
won't be able to restrain the child's upper body
in a sudden stop or crash. The child could be
seriously injured. Make sure the harness clip is
properly fastened.
1-42
13. Pull the shoulder harness adjustment strap (C)
firmly until the harness is snugly adjusted around
the child. You should not be able to put more than
two fingers between the harness and the
child's chest.
Make sure the harness and buckle strap are
not twisted.
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