Hey guys, noticed that my atrac is working in the front but not the rear. Rear wheel that is up in the air just spins and spins with no input to stuffed rear tire. I have no lights on the dash and a scan with a Torque OBD II shows no codes. Could there be a bad wheel sensor in the rear? How would I diagnose? I was just going to swap them out for new units until I saw the OEM price tag. Thanks