It comes on randomly and usually goes away when I shut off car and start again. Wondering what everyone thinks it may be? I had a wire grounding on the manifold when I got the car that gave me all sorts of lights on and gm fixed it. I was thinking front wheel hubs? Sometimes when I'm stopping at slower speeds the brakes grind like abs kicks in or something. I have an extended warranty I'm gonna try to use just need to havr the $ set aside for what they don't pay. Was gonna take to gm In a few weeks. Any help is appreciated!!