Wheel hub bearings?
 

Did about 150 miles with the truck today, was making some strange noises, I figure its a wheel bearing.
Usually when I have had a hub go bad in my other vehicles, there is a roaring sound or the ABS light comes on etc. Today, none of that but it made a clunky, grindy sound every few miles, just for a second or two. When I got home, I jacked it up and there is play in the hub, so I figure thats where the noise was coming from. Never had one sound like this before.....Any comments?...Anyone had this happen this way to them?

97 GMC 1500 4x4

Usually they make noise when you put any lateral stress on the bearing from turning and things like that. But Wheel bearings are usually pretty predictable. Maybe the noise is from a U-joint? I've had U-joints make some strange sounds before.

Very characteristic of the Chev trucks. As any wheel bearing begins to go bad they are hard to diagnose because they are hard to hear or feel.
Only until they have gotten REAL bad. Can you hear it and feel it in a Chev truck.

I have had a wheel bearing go in my Buick and with out a dault you know it's a bad wheel bearing

Thanks guys.....Someone on another forum said the noises I heard and felt may have been the ABS kicking in from a false reading, due to the bearing having slop in it...Kind of makes sense....Going to tear into it tomorrow, although I cant get parts until I get to work on Monday.