This may sound stupid, but from personal experience... any chance a crew has complete road work in your area? Recently thought my car was pulling to the right. Had everything checked, nothing found. Test drove by a mechanic, nothing. Another customer as the dealership asked me about the problem, and he told me to look at the road I drive daily. Sure enough, they had just paved it, and there was a slight draw to the right, which made the car seem like it was pulling. Changed my route to the highway and problem is now gone. Strange but true wink