2001 Buick Regal Owner's Manual - Page 18

Split Folding Rear Seat This feature enables you to access your trunk. Pull forward on the seat tab, located on the front of the rear seatback, to fold the seatback down. To return the seatback to its original position, push it back up and make sure it latches. A lock out feature is located on the rear of the seatback 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 seatback, located inside the trunk. 1-6