Really, I thought it was a posi trac setup. It does have traction the control system. How can I check for either of these conditions? When I jack the wheels up and spin the tires they do spin the opposite way and it does make a grinding sound. I notice some play in the wheels when I pull back on them. Any other insight? This is my wifes ride and she doesn't beat on it or race. It only has 68800 miles on it.