How do you install a driver side door actuator on a 1999 Cadillac Catera?

To install a driver side door actuator on a 1999 Cadillac Catera, first remove the interior door panel by unscrewing any fasteners and gently prying it off. Disconnect the electrical connector from the old actuator, then remove it by unscrewing any mounting screws. Install the new actuator in place, reconnect the electrical connector, and reattach the door panel, ensuring all clips and screws are securely fastened. Finally, test the actuator to ensure it functions properly before fully sealing the door.