pcm replacement

I bought a 1995 cherokee with no pcm. If i get a junkyard pcm and plug it in will I have do anything else.

Depends if anything else is wrong with the Jeep. :}

Try to match the year and transmission for the junkyard donor. I think, but am not sure, that 91-95 computers are interchangeable. Shouldn't be any dealer programming or stuff like that to worry about.