Mysterious noise from front end, sounds like passenger side
Super Member
Joined: Apr 2013
Posts: 1,029
From: South Carolina midlands
Chevyragtop, my one experience with a 4WD front hub going bad was a loud roar from 40 to 60 MPH. It sounded to me like a separated tire does. This bad hub had no play at all. In the later stages, it had a slight vibration felt through the steering wheel, almost like a tingle. The wheel bearing hub assembly is not servicable. I was definitely in my 4WD 2003 Blazer a bad Hub.
Exactly, they are sealed and greased for life. No way to add grease. But someone who knows what they are talking about would already know that! 
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