For a few weeks now, the front wheel bearing on my 2002 Pontiac Bonneville has been howling at me... and getting more and more impatient ;-) It was loud enough, and I had some time in the evening, so I jumped in and replaced it. The cool thing is that this bearing is a complete, sealed unit, and so replacement was fairly straightforward.
The steps were easy: remove wheel, stick screwdriver between caliper to remove the 1 3/8 nut, remove caliper bracker and rotor, remove 3 bolts from the rear of the sealed bearing unit, then putting the rotor back on the hub and beating it out with a rubber sledge to avoid damage to the CV joint. Finally, the sealed unit was installed in the reverse process and the ABS unit plugged in.
Took about 1.5 hours because I am slow, and I also replaced all the brakepads. Best part is, no broken off bolts, no skinned and bleeding knuckles, and it worked! The Bonnie is purring along just like new. How often does that going to happen on the first try ;-)