I have an early 99 truck. I left a gas station today, no issues prior to this at all. felt a bumping under my left foot, and felt like the truck had a caliper locking up. after inspection, caliper is fine. the front rotor assembly will not turn smoothly. its jerky and sounds horrible. I can lock the hubs in and it still makes the noise. does my truck have wheel bearings under the hub/rotor assembly? or is my hub shot?