My abs trac off lights come on. Scan tool says right front. I replaced right front bearing with ac delco one year ago, 12,000 miles. Resistance is good. Voltage matches left front. Driving with scan tool shows similar voltage. I just replaced wiring because I already bought harness, but no difference. Sometimes it takes a few hundred feet of driving to trip lights. Sometimes they come on before I even move, just putting it in gear

 

Have you checked the wheel speed sensor?