Buick 1993 Skylark Owner's Manual page 42

There is one guide for each outside passenger position in
the rear seat. You will find them tucked in between the
seat back and the interior body, about half-way down the
edge of the seat back. Here is how you should install the
2. Slide the guide under and past the belt. The elastic
cord must be under the belt. Then, place .the guide
over the belt, and insert the two edges of the belt into
the slots of the guide.
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