Morn'n, having the same issue with a '04. On another forum the guy had a bad speed sensor. I'm still looking around to see if the speed sensor was the resolution for other folks. The guy said it was a cheap fix. Like that part! Now I just have to find out 'where' the speed sensor is. good luck with your issue.
So, where is the speed sensor on a '04 3500?
Originally Posted by RamNY
I have a 2008 and the cruise just stop working. I can turn it on right after I start the vehicle, but it shuts back off after a few seconds....I can't turn it on at highway speed. Any info on the malfunction would be much appreciated.