I have a 2002 1500 van. When I push the Overdrive off button on the stalk the overdrive off light does not come on. When I am driving at highway speeds and I think the overdrive is on and I press the button, nothing changes in the engine, so I think the overdrive is on and simply not being turned off. I am not 100% that it is going into overdrive at all though.

I know the actual overdrive off light works because I ran the instrument check (hold reset button, turn to on) and it did light up. Maybe the switch on the stalk is simply broken? I have run through all my fuses and they are fine. There are no ODB codes coming up. Whats the next thing to check?