My truck has had this issue for some time and I can't figure it out. To start at almost any speed I can feel and hear a light grinding it will vary when I touch the go pedal. Truck also is pulling pretty hard to the drivers side exspecially at highway speeds. And when a apply my brakes at about 45 to 40 mph when slowing down I am getting a bouncing/shimmy until about 30 mph. I took the wheel bearing hub assembly apart and noticed the bearing and knuckle seal have been making contact and rubbing on each other. Any ideas would be great. Thanks guys
I have now replaced both wheel bearing caliper and rotor on drivers side and rebuilt the front driveshaft. Trucks still pulls to the left and bounces. I can watch the wheel twitch to the left more and more when braking. when towing its a little worst with the pulling.