Mine was the driver's side door solenoid (2000 ZTS).  one word - warranty.

In message
<58e6e3bdbb423fcf86d92ba4a06201b2@localhost.talkaboutautos.com>, JJFuray
<jjfuray@alltel.net> wrote

There is a carefully hidden fuse on the BACK of the fuse panel (the one
fitted inside the car) . On removal of the panel you have to search
within the wiring attached to the back of the panel.

The fuse is   20Amps - Yellow

The black module on the back of the same panel has nothing to do with
the door locks. It is the central timing module. It's responsible for
the time control elements for the heated rear windscreen, interior
lights and intermittent wiper operation. The module also activates a
warning buzzer/chime  for lights left on, and on a car with an auto box,
a warning if not parked with the selector in the P position.