So this is a shot in the dark. A dealer about 140 miles away has a 94 in stock that is in GREAT shape. Everything is really nice, the miles are in the low 100+ range. A great rig. The only problem is the rig won't shift out of 4lo. What are some causes and are there any simple fixes to get it to be able to drive? Or does it need to be towed you think? I will know more details in a day. They are only asking 2400 due to this.