If it moves and turns and the brakes works, then not likely the pump. most likely water got in and is blocking an internal screen. Had this happen more than once. Especially if left outside in a heavy rain. Changing filters likely won’t help. John Deere not only uses filters, but they use prescreens through the system. In seemingly random places depending on model. One or more clogs and the system goes down. Everyone forgets about the screens. Dealer will claim no screens but I’ve yet to see one without them.