Two weeks ago I had the Traction Control and ABS lights come on. Sometimes when I restarted the engine they would not come on and the next start they would. The Dealer replaced the the rear electric Diff position switch and that seemed to solve the issue, well for about a week. Same thing now. They may come on or they may not. Anyone else have the same problem. Rear locking Diff doesn't work or the cruise control when the lights are on. The truck drives fine with the lights on but not having cruise control sucks.