Buick 1998 Century Owner's Manual page 66

If
your child restraint has a top strap, your dealer can
obtain a kit with anchor hardware and installation
instructions specifically designed for this vehicle. The
dealer can then install the anchor for you. In Canada,
this work will be done for you free of charge. Or, you
may install the anchor yourself using the instructions
provided in the kit.
Securing a Child Restraint i n a Rear
Outside Seat Position
U
You'll be using the lap-shoulder belt. See the earlier part
about the top strap if the child restraint has one. Be sure
to follow the instructions that came with the child
restraint. Secure the child in the child restraint when and
as the instructions say.
1. Put the restraint on the seat.
2. Pick up the latch plate, and run the lap and shoulder
portions of the vehicle's safety belt through or
around the restraint. The child restraint instructions
will show you how.
If the shoulder belt goes in front of the child's face or
neck, put it behind the child restraint.
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