front wheel bearings
the bearing on the front is a hub assembly. there are 3 bolts that fasten it. also the axle nut must be removed. can be quite a pain to do without the right tools. hub assembly is the part that the wheel bolts to
their are two different types - the 2WD version looks like the picture i've attached (from GM manual)
the 4wd version looks like this picture (it's number 6) and includes the ABS wheel speed sensor. This is also from the GM manual
and as i recall the 3 bolts are either 9/16 or 15mm.. maybe even an 18mm, cant remember, havent done one in a while
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