Buick 2000 Century Owner's Manual page 17

Split Folding Rear Seat (If Equipped)
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.
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.
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.
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