Pontiac Grand Prix 1993 Owner's Manual page 36

Once the special hardware is installed,
please follow the instructions with it
and these steps:
1. Unbuckle the automatic lap-shoulder
belt by pushing the button on the
buckle. It will stay on the door, ready
to be rebucltled for use by adults or
older children.
2. Snap one hook of the infantkhild
seat attaching belt near the floor at
the door side of the seat.
3 . Put the belt's special latch plate into
the vehicle's safety belt buckle.