Can I replace the PCM myself or do I have to pay a repair garage a bunch of $?

Thanks. So the new one I would buy at the parts store is not ready, I have to go have it programmed somwhere? I'm gussing that would be the Chrysler place.

Some parts stores can order them in with the vin# programmed into it before it's shipped. Ask them first or it will have to be by a shop that pays to have the programming or the dealer will have to do it.