Occasionally it feels like the ABS is releasing my front left brake and making it pull slightly to one side while also making a grinding noise. It happens just at the last moment when the car comes to a complete stop. It does not do this during regular braking at speeds above 2-3 mph. It usually happens most often in the mornings after the car has been sitting all night. Information: (Not always, but more often than not, the ABS light comes on after driving for a while) I have had the sensors cleaned and supposedly tested and the shop says the front ones are ok, but the rear sensor "appears" to be bad. Before I replace it (not cheap and hard to find) I wonder if there is some way to verify that it really needs it and that it really is the cause of this problem. It seems strange that a bad rear sensor would affect just the front left brake. Is this possible? More information: (Brake front pads are new and so are the rotors and calipers) Of course it could still be something wrong with that particular caliper, but the shop that did the brake job seems to think it's the ABS causing the problem. Can anyone provide the part number for the rear sensor? Thanks