The past two mornings when I turn my truck on the "SLIP" light comes on. After a bit, it turns off. Today as I was trying to pass someone, I dropped the hammer, the tach jumps to 4k, and I lose throttle. I called the dealership and they say bring it in, it is probably a traction sensor. Before I get hit with a huge bill, is anyone having/had the same problem and what was the outcome? Thanks guys.