BOUGHT MY 09 COBALT SS TC SEDAN WITH 3500 MILES ON IT. REAR ROTORS ALREADY HAD GROOVES AT THAT MILEAGE. MY CAR IS AT 8700 MILES NOW WITH BOTH REAR BRAKE CALIPERS HAVING TO BE REPLACED ALONG WITH DEEPER GROOVES IN REAR ROTORS AND SQUEAKING FROM THE REAR BRAKES. THE FAILING REAR BRAKES CAUSED MY EMERGENCY BRAKE TO FAIL. THE EMERGENCY BRAKE FAILED WHILE ON A HILL AND I WALK OUTSIDE TO FIND MY CAR UNDER MY GIRLFRIENDS TRUCK! (E-BRAKE ENGAGED AND IN REVERSE) THIS WAS FIXED WITH THE CALIPERS BEING REPLACED, I STILL NEED TO HAVE MY ROTORS WORKED AS THEY ARE ALREADY TO THIS POINT. I WAS FORTUNATE TO BE PARKED ON A NOT SO STEEP OF A HILL, COULDN'T IMAGINE SOMEONE IN THE SAME SITUATION LIVING IN A HILLY REGION. (LAWSUIT WAITING TO HAPPEN). *TR