I have 4th gen 2012 1500. Have abs,Trac control & Serv 4x4 lights on sporadically. Changed both rear wheel sensors went out for a day and came back on. Sometimes when I cycle key on and they are on I can turn back to off, then turn back on lights will go out and truck will be fine.
But next time lights come on and stay on. Could this be a failing relay or short? Seems a short would have nothing to do with cycling key. Every time I plan on running scan the lights are out. Anyone else had this happen,?

 

There should be history codes for those failures.......