(I decided to experiment for those who don't want to read the entire post. I bolded the Coles notes version. I am a skimmer myself. This seems to work pretty good.) Just thought I would share my experience from the last couple days. Have a Chev Cobalt with about 160k that was humming pretty good in the front end. Took a couple months to reach "I better do something about this" stage. Put it in the garage, jacked it up (and blocked it safely) and had my wife run it through the gears to fifth. At idle of course just to make sure I get a good hum. Took my stethoscope and determined that it was the driver side. Which is good because when we would drive, we were sure it was the passenger side. So I called the local GM dealership and got a price of 237 for a bearing assy. with 5 year warranty(5 stud with speed sensor). Thought to myself, Napa is going to blow that price out of the water. Call them up, and their price is 239 with a 3 year warranty. Lesson learned that you don't always get screwed at a dealership. Jack it back up in the garage. You think I could get that old one out? Used penetrating oil, a slide hammer, prybar... Took me at least an hour to get it out. And when it did, it didn't all come at once. Ended up having to push a wheel stud through and push the hub out. Kinda like this guy did. After it came out, it was smooth sailing getting everything back together. Thanks to the Haynes manual of course! Oddly, I look forward to changing the others when they wear out. Anyone else had any experience with one of these?