Brake Antilock Wheel Speed Sensor problems of the 1998 Chevrolet K3500

Have had 2 1998 K3500 trucks. Both have had what I consider severe anti-lock failures which occur anytime, especially at slow speeds. Both were taken to multiple dealerships with no permanent fix. Consensus of problems on both trucks was that the wheel speed sensor was failing, which would cause the anti-lock to activate when not needed. This results in inconsistent stopping distances. Both trucks also have a cold weather real end drag problem with the brakes. When the weather is cold, the back wheels will lock up and skid while stopping no matter how light you touch the brakes. This lock up lasts for about the first 1/2 mile, until the axle heats up, then the brakes work fine - except for the abs. Second of K3500 trucks (1998) has an intermittent power steering failure. Sometimes the power steering drops off, and then suddenly comes back. This typically happens at slow speeds. Oh have to either muscle the wheel to make your turn in a larger radius, or feather the case to pump up the hydraulics on the power steering. The later results in a lurge and the former results in a wide swing.

Anti-lock brakes failed,speed sensor.