Some you do and some you don't. If you can put the pitman arm puller on and remove the pitman arm then leave the gear box alone. If the puller won't fit on it Then remove the gear box.
I don't know about other years, but this works on my 2003. First, open the hood. Remove the plastic cap covering at the pivot point for the wiper arm using pliers (or pry it off with a thin blade)....
1. buy steering wheel removing tool2. remove horn cap (depending on year, don't lose the horn wire)3. loosen the main bolt holding the wheel to the column4. screw the tool on5. slowly ratchet the...