Hey Dick, I am experiencing the same problem as you. My transmission works great, I pull a trailer regularly. Here lately I have noticed that it is sometimes difficult to get my overdrive button to come on to disengage the o/d. I have found that for some reason if I pull the trans down in first I can hit the button and the light will come on no problem. I am trying to figure out why this is. I think we might have similar problems.... I think it just might be something electrical.