shifter not working just moves it is hooked to transmisson
When you move the shifter does the transmission shift selector lever (arm) move (at the transmission)???
There is a bushing that connects the shifter cable to the transmission shift lever that goes bad, sometimes they can be replaced, the other end of the cable can come loose from the shifter also… The shift cable itself can break…
Now if all is working then you have something internal to the transmission that is disconnected for one reason or another…
usually, the bushing goes bad where the cable connects to the tranny and the cable becomes disconnected. but if the shifter is still connected like I think you are saying, then most likely your shift cable is broken somewhere and needs to be replaced. this is for a 2007 trail blazer but it is the same example for yours.
2007 Chevy Trailblazer gear shifter not shifting gear - YouTube