Hi all I'm new to this and new to owning a diesel at that but really miss my truck I'm stuck driven a sardine can. I have a 2003 dodge 3500 5.9 cummins I'm haveing problems with the transmission. The transmission starts out in 3rd I have no over drive my cruse control does work and does not show what gear I'm in on the cluster . I had it hocked up to a computer but could not comunicate with the transmission and there is no codes set . Please help