The ABS wiring harness run on top of the lower control arm. With age, the wiring insulation gets brittle and could easing break upon impact from a blown tire. A few years back, I had a problem with the ABS and TCS going out while turning at low speeds while parking. GM makes a connector with enough wire to go from the hub/sensor to the harness on the front of the subframe. A damaged wire harness may cause the hub sensor to fail. Unfortunately, the sensor is in the hub. I had to replace the connectors and hubs on both side to fix my problem.
