What's going on. I own a lly dura max and my buddy was selling his first gen and I loved that truck so I bought it. Catch is there is some issues. First the overdrive doesn't work, I know it can't be the clutches the tran was just rebuilt less than 500 miles ago. The sensor on the transfer case I tries going to local auto store and they don't sell them could any of y'all give me a part number also speedo doesn't work nor does the odometer. Turn signals don't work either I'm looking for help haha thanks