Just bought the truck recently. Started snowing today and locked up the brakes and got a 4 wheel slide. Abs comes on while starting the car and then goes away like it should. Tried it several times in 2wd drive and 4wd. abs light stays off the entire time i was trying to get abs to work. Check the fuses , tires are stock with stock rims. i cant feel any dragging while driving the car . Its driving me nuts and the dealer told me to get bent basically when i called them. Anyone have these problems before and if so your help would be appreciated .