Replace wheel hubs?

I'm assuming I need to replace the front wheel hubs as it sounds like the bearings are failing. Just did a front brake job and when everything was off I spun the hub and noticed a clicking sound. Correct diagnosis?

INFO INFO INFO ! ! ! ! ! !

we need more info , what year.... does it have a diff in the front or a transaxle.......how many miles/kilometers........how loud is this clicking.....

2000, 4.3l v6, 5spd, 2 wheel drive, 94K miles. Loud enough to hear without having to pay attention to it. Can feel the click in the lug when spinning it.

Ahhh 2WD........... most likely the bearings yes. But you do not have to replace the entire hub , the bearings are removable.

Are you sure they are serviceable? Everything I've read so far says they are sealed units and the whole hub needs repalcing. I would certainly like not to spend $400. I know the rear can be serviced. Thanks.

I'm not 100% sure, but I think you might be looking at the 4x4 bearing listing. The older 2 wheel drives were just bearings, not the whole hub assembly. Not sure about the new ones though.