How do you replace ABS sensor on vehicle and where is it located on brake?

The ABS Sensor is on the top back side of the bearing hub. Its held on by (1) one star bolt and the line is held in place by 3-4 platic pins that pop out and then the sensor is pluged in to the wireing harness right at the back top side of the wheel well going towards engine. You need to remove front tires and you might be required to purchase bearing and hub for this is all one piece on GM type trucks. If you have to replace hub cost for part is around $175.00 bucks. If not unit is rather simple to replace. If you have to replace hub perpair to say the F word about 2000 + times.Rear sensor most likly also screwed to bearing assembly. Good luck hope you can just replace sensor.