Brakes engage the anti-lock system everytime I come to a complete stop... on 2001 Ford Ranger

Rookie cbe0621eac06868b3efe0d8d1d3611e23c60d3114864ea2ec19a68cfbd3eebab matter what speed I am moving, type of road, or weather condition. Car stops ok, but the anti-lock pulsation at every stop from my brake pedal and the strange noise associated with it is driving me crazy. Brakes were repaired (new front discs & calipers, new rear drums, bled system & new fluid) last summer at Ford dealer shop. What could be the problem & how much to fix?
(1) Answer
If the concern started right after the brake job I personally have had aftermarket rotors that had bad trigger wheels or bent/misaligned.Even dealers some times use aftermarket parts.I would scan for abs dtcs first and foremost.