The Manual Climate control module comes out really easy. Is buying an automatic module and putting it in it'* place all it takes to convert it or is there a lot more steps to take?

Don't think it'* easy. This is a previous gen though....
http://www.bonnevilleclub.com/forum/...1777&highlight

you need ALOT of wires, and patience....Im gonna try it next year when i can have some downtime with the car, but it involves getting a new dash harness, pulling the dash, new blower controll module, and about 7 other various sensors....like i said i have a SSEi Parts car that i grabbed the harness out of....so i have that to play with....if you dont have the harness dont even attempt

The easiest way to perform this task is to purchase a Bonne with the Auto Climate Control, then park your old Bonne.