1995 Buick Century Owner's Manual - Page 38
1995 Buick Century Manual
Page 38 highlights
Lap Belt If your vehicle has a front split seat and a rear bench seat, someone can sit in the center positions. Buckle, position and release it the same way as the lap part of a lap-shoulder belt. If the belt isn't longenough, see "Safety Belt Extender" at the end of this section. When you sit in a center seating position or in a station wagon third seat, you have a lap safety belt, which has no retractor. To make the belt longer, tilt the latch plate and pull it along the belt. To make the belt shorter, pull its free end as shown until the belt is snug. Make sure the release button on the buckle is positioned so you would be able to unbuckle the safety belt quickly if you ever had to. 1-26