Cadillac 2001 Catera Owner's Manual page 23

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 upright position, lift up on the seatback
and push it rearward until it latches. After returning the
seat to the upright position, pull forward on the seatback
to make sure it is locked into place.
Return the safety belts to
their original positions so
they will be available for
rear seat passengers to use.
To do so, slide the buckle
into the latch as shown.
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