Buick 2001 Regal Owner's Manual page 47

4. Buckle, position and release the safety belt as
described in "Rear Seat Outside Passenger Positions"
earlier in this section. Make sure that the shoulder
belt crosses the shoulder.
To remove and store the comfort guides, squeeze the
belt edges together so that you can take them out from
the guides. Pull the guide upward to expose its storage
clip, and then slide the guide onto the clip. Turn the
guide and clip inward and in between the seatback and
the interior body, leaving only the loop of elastic
cord exposed.
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