Removing stuck shift knob?

Take it to a shop that has a sonic cleaner . We have one and have freed up some things that you would not believe.. A guy came here and was working on a remote mirror that was stuck. It would not move. He soaked it for over a weak. The cables and the inside of the mirror and control unit were corroded.

We put in in the sonic cleaner for 20 minutes it came out like new and worked perfect. If we can't get something apart it goes in the sonic cleaner. Aluminum heads an engine parts come out like new. Most engine machine shops will have them.

We use it on a lot of ATV and dirt bike engines. We got one for are home shop to basically clean bearings out in the sprint car and the ATV's If you ever raced on dirt you know what I mean a sonic cleaner is a must.