Brake Antilock Wheel Speed Sensor problems of the 2001 Chevrolet Impala

We bought this car with approximately 98,000 miles - gas gauge hasn't worked from beginning. Back in may had wheel bearings changed and ever since abs comes on constantly while applying brake and slowing down. Abs light comes on at times. Abs will kick in about 3 times after applying brakes. Nephew scanned it to see codes and they were: c1221 lf wheel speed sensor input signal is 0 c1222 rf wheel speed sensor input signal is 0. Is there a recall for this issue???.

The antilock braking system started malfunctioning at about 89000 miles. It appeared to be a faulty wheel hub. After replacing the passenger side front, it went away for about 3 days. Then it was the driver's side front that needed replaced. (both threw out codes for excessive wheel speed variation, as wheel as wheel speed sensor output 0. ) two weeks to the day after replacing the passenger side front, it "went bad" again. We changed it again, just to be sure, and at this point, it appears to be in the wiring harness. After inspecting everything within about 2 feet of the wheels, it looks like it's farther up the line. The abs unit will cycle a few times before the abs light kicks on to say there's a problem. Until this happens (once the light is on, the abs system stops kicking in) braking is almost unresponsive, and at best, intermittent. From everything we can tell, this is a serious and all too common problem with these cars. Again, I believe the problem is either farther up the harness, or where it splices into the rest of the harness. Neither of which can be accessed without taking off pretty much the front of the car. I should also ad that this vehicle only has 4 wheel anti-lock brakes, not the additional traction control unit.

- I have a 2001 Impala LS 3. 8l with traction control - service traction control light came on. Abs brakes would engage when making a right hand turn (loose or tight turn) and when acceleration from a stop. There was no reason for the abs to engage when making these turns, road conditions were perfect. - I took the car to the shop and they said the speed sensor has failed due to environmental conditions (please reference NHTSA campaign id number 05v379000 for a recall on gm pickup trucks and SUV's). My car is not covered under this campaign but the problem describe in the campaign is exactly what has failed in my situation. - the shop replaced the right front hub bearing and wiring harness using hub kit 6. 307 and sensor kit 4. 720 -problem was fixed - I would like to know why cars are not covered under the capaign like trucks and SUV's that have the same speed sensor.