2002 P/S pump pulley
 

I had to replace my serpentine belt, I noticed that my P/S pump pulley was loose. I tried to tighten the bolt on the pulley system but i can not get the bolt tighten. I then tried to take off the bolt but i can not loosen the bolt either. My guess is that the threads have been stripped. Does anyone have an ideas or suggestions on what i should do? If i have to take the mpv into a shop i can do that as well but i would like to try everything first.

eric