1997 Cav Shifter Knob

Ok. This may be a dumb question or not, but can the damn shifter knob on a 1997 Cavalier come off? How so? I thought most cars have a shaft with threads and it just unscrews? This is not so on my car, I think I screwed it up b/c it spins (not easily) but doesn't seem like it is on threads. Any ideas?

Also does the shifter (the metal pole park, shaft thingie) have threads?

It's in the owner manuel but if you have lost your there the clue!
1- Look behind the knob you'll see a U pin. Take it out with a screw driver and pull the knob!

2- No there no threads