AKuCin48

I have the same exact problem ie:. Odometer is out, speedometer is out, obviously cruise control and my transmission shifts high in first gear just just like described above. Also check engine light is on. The thing with my situation is that I also got a speedsensor code and it was replaced butnit didn't correct the problem. I've been told to get a cluster but I've researched this extensively and I think it's an ecm problem but no one definitively has diagnosed. The speedometer and odometer only acted funny when taking long trips and engine was warm. Was intermittent at first and since has been like this for a year