How do you replace outside mirror on a 1999 Buick park avenue 3.8l?

To replace the outside mirror on a 1999 Buick Park Avenue, first, carefully remove the interior door panel by unscrewing any screws and gently prying off clips. Once the panel is off, disconnect the wiring harness for the mirror, then remove the bolts securing the mirror to the door. Install the new mirror by reversing the process: attach it with bolts, reconnect the wiring harness, and reassemble the door panel. Ensure everything is secured properly before testing the mirror's functionality.