2000 Buick Century Owner's Manual - Page 17

Split Folding Rear Seat (If Equipped) This feature enables you to access your trunk by pulling forward on the seat tab, located on the rear seat, to fold the seat cushion down. This feature allows your direct access to the trunk. To return the seat to its original position, push it back up and make sure it latches. A lock out feature is located on the rear of the seat back when folded down. This will disengage the inside seat tab when the release is locked. The seat will then only open from the tab on the rear of the seat back, located inside the trunk. 1-5