They are indeed a sealed bearing/hub assembly...with the ABS sensor. Both of our vehicles, the 02 Cheby Duramax and a 99 Exploder, are 4 wheel drive. They both have bearing/hubs on the front. The Exploder needs a bearing as well. Have had it for a while now, just waiting for the next maintenance. It is not worn out just clicking. Like a bone head I used the impact go on the axle nut. From what I was told the impact action puts small divots in the bearing/races, which makes the noise.
Just talked to my buddy at NAPA, can get me a Red Top Optima for $154....
Damn near most irritating thing is a dead battery.
Went to go work on the trees on the sides of our roads yesterday. The truck I use for this sits, except for this. Just moved the damn thing on Saturday, started right up. Opened the door yesterday, barely enough juice to power the dome lights...
