Truck Forums - Slight brake pulsation

Has anyone else experienced this...my truck had a very slight pulsation while braking so I figured I had a rotor that was slightly warped and needed to be turned or replaced. I went ahead and had the fronts turned (they had plenty of meat left) and replaced the rears (they were too thin to turn again). I also put new pads front and rear. I got it all back together and it still feels like I have a very slight pulsation. It almost feels like the ABS is engaging and disengaging rapidly. It is only felt when stopping from cruising speeds. I don't have any trouble codes. Oh I also replaced the front hubs which come with the ABS sensors a few months back - one of the bearings was roaring. Could a bad speed sensor cause this and not trigger a light? The truck stops great and has no other issues. Again it is a very very slight pulsation but annoying since I just put $300 in all new brakes!!!