Cadillac 2000 Catera Owner's Manual page 21

Folding the Rear Seat
With the rear folding seatbacks, you can carry long cargo
by folding down part or all of the rear seat. Before you can
fold the rear seat, you need to unlatch the center buckle.
Insert a key or a similar
object into the slot as
shown to unlatch the
buckle. Move the belt
to the side so it is not
in your way.
To unlock the rear seatback, press the pushbutton at the
top of the seat and fold the seatback forward. To return
the seat to the passenger position, lift up on the seatback
and push it rearward until it latches. After returning the
seat to the passenger position, pull forward on the
seatback to make sure it is locked into place.
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