abs and brake light on intermittenly. I replaced rear sensor, worked for a while then came on ,my speedometer works fine.
off when i start out but almost always turns on sooner or later. ran ohm test on fronts, looked good. Has anybody else had this problem? I see alot with speedometer problems at the same time and the rear was the problem. My pump works good so the controller is okay but will be next to change out,
then bearinga and sensors. Trans out put sensor i dont thnk would do that but i dont know for sure.

 

Well if you changed the sensor out on the rear axle then I would start looking for a short in the wire... probably have a nick in it somewhere and it is intermittently shorting out.

 

Check the harness connections for rust or other.

Also helps to tell us what year, motor, and trans, transfer case.......Whatever