Oh and you can rent a pitman arm puller from Autozone but let me tell you sometimes they are a ***** to get off. I have had to heat them before they would budge. Good luck in your adventure!
It is imperative to have a pitman arm puller to remove the arm. If there is a lot of rust, soak it good with penetrant. Since I'm in Ca. I don't have
to deal with the rust issues in salt country. I have never had a problem removing a pitman arm, and have never had to use heat to remove one.
I did grow up in Indiana so I remember pick up bed sides flapping in the wind.