Every time I go around a specific curve (it is an "S" curve) my anti-skid locks. I checked my tires and the tread seems fine -- and this only happens on ONE specific turn. I go the speed limit (around 35 MPH).

Any ideas?

 

might be a wheel sensor.

 

Check the air pressure in your tires, especially the front two. Could also be something on the road surface like diesel fuel causing it to be slippery.