kevin cave
Junior Member
I have kind of a DEF nightmare. my first trip in my brand new 2016 2500 not a hundred miles into it the def light came on and went into limp mode. long story made short, after being turned away from a dealer I added def fluid and everything was good. Recently while traveling the def light and limp mode came back. this time adding fluid didn't make it go away. went to the dealer and they told me it was an update issue? anyway a week later I got it back. on Saturday another drive and the def light comes on. turned around and headed home. light went out, then came back on for a while and then went off and has remained off. I have never put old fluid in it, I use the truck stop def or peak fluid and check the dates. now it is out of warranty..any thoughts on this? I would appreciate any feedback..