Graco Multi-Stage Lightweight Stroller Owner's Manual page 82

Final Safety Check: Every time you drive with
your child,
PUSH DOWN on the top of the infant restraint
slowly but firmly to make sure the vehicle belt
does not lengthen at all and that the vehicle
belt or LATCH is fastened securely around the infant
restraint/base .
Holding the infant restraint or base near
the vehicle belt path, TURN AND PULL the infant
restraint forward and to both sides to make sure
the vehicle belt or LATCH does not lengthen or
loosen and the infant restraint does not easily
move. The infant restraint should not move side
to side or front to back more than 1 inch (2.5 cm).
42