Hey guys, just bought a 4650 Deere a couple days ago. Tractor has the power shift trans and it seemed to be running just great, but all of a sudden the transmission pressure light came on. So we parked it. Thought the filters could have got some junk in them. So pulled off the trans and hyd filters. Put some oil in. Fired her up. Same thing. Any ideas to what could be causing this? Thanks.