OK, had to put the truck in 4WD low this morning to get into the driveway. I turned it off and went inside. When I went back out a couple of hours later, I was greeted with a blinking "Check 4WD", and both ABS and traction control lights are constantly on. I have turned the truck off and went through the 4WD again thinking it may have needed to be reset. No Luck. Any help would be great! Thanks!