A998 stuck in drive

Got to work this morning and tried to park my truck, but it stayed in drive. The shift lever in the cab would move, but not "click" between gears. It was kinda just flapping in the breeze. I had to lay down in six inches of snow and manually put it in park. From there, I can start it up and select any gear I want one time, then back to a sloppy shift lever.

Gonna inspect the linkage either at work today, or when I get home. Is there any specific location I should start looking? Perhaps a problem area, known for failure? Thanks