replacement ignition key cylinder

Looking to replace the ignition key cylinder in my steering column (worn out--key falls out on big bumps) and looking for experience / options. Can a locksmith cut a new cylinder to match my old key? Otherwise I would have to replace the door and hatch locks as well.

Its a 91 don't think its in the chrysler database but might be

Thanks

I think that you can set the new lock cylinder to the old key ...but I'm not sure

this may help

https://www.youtube.com/watch?v=XXoLoKSk6vA

I ordered a new lock cylinder from ebay that you can set up to work with your key .