This happened once before and a neighbor saw me stuck in the street and said to do some movement---but I can not remember what they said to do. Does that sound familiar?
No the lever is not stiff--it goes back and forth eassily and sometimes the gear stays the same. The biggest anomaly is it won't always go into park----stops at reverse.
It was some type of move where they (neighbor) pushed it back or forwards and then put it in gear or park or whatever. The reason I can't remember is it happened to my wife at the end of our driveway and she is unsure what was done.
Ring any bells??
Ok, if you want to put it into park, from under the truck, pull the shift lever/cable all the way forward. Again, I have had no luck finding and trick that fixed this.