I have the same problem. Did you ever find what was wrong?My cruise control doesn't even engage. The first time I hit the button the dash light goes on but the cruise control doesn't engage. The light goes out and it won;t come back on unless I turn the truck off and re-start. Same sensor problem? 2003 4.7 2Wd 1500.:4-dontknow:
I honestly could not tell you. I still have the same problem you described above. I got caught up with other projects and havent tried messing around with it. But if you figure it out let me know and i will do the same.Just started experiencing the same issue with my 2007 Ram, 4.7. Light was on while I was on the highway yesterday but Cruise would not engage. After playing with the buttons a bit the light on the dash went out and would not come back on.
Got home shut the truck off, restarted and the light came on for a few seconds.
This morning I can't get it to come on at all; I did the key trick to see if there were any codes and it came up with none.
Did replacing the above mentioned Servo do the trick and if so what was the part number, etc?