Alright so I creep around this forum alot and have found lots of great info from members on here so I thought it would be right to give back to the community a little bit. This is my first write up so go easy on me... hopefully this helps someone save alittle money and replace thier wheel bearing hub assembly themselves! This may be the same for 2001-2003 as well but I'm not 100%.
Its fairly simple and straight forward If you can do brakes you can do this!!!
So first things first. You need to identify which wheel bearing is bad. I had some pretty worn out tires on my car and thought the loud vibration/rumble was because of that. After replacing my worn tires the rumble was still there. I couldnt think of what else would be causing such a noise considering my alignment was good. So I asked around and talked to a few mechanics and friends asking for thier input on what they thought it could be. Everyone suggested wheel bearings.
I had to determine which bearing was bad. I simply raised the car off the ground and and listened closely to each wheel as I spun it. Some recommend a sethescope. In my experience it is easier to hear when you get the wheel going faster rather than slow.
Listen for a grinding,friction, or just an un-smooth sound. Its a different sound than you rotors and pads touching alittle. (kinda hard to explain but you should hear a noticable differnce between a good and bad bearing.)
Ok on to the pictures and procedure, (sorry for the iphone pics)
First remove the wheel...
Next you will need to remove the caliper. It is only 2 bolts they are 19mm.
also unclip the "brake pad warning" sensor so you can get the caliper out of your way. Alot of guys set the caliper on a bucket or zip tie it up to the coil spring. Just get it out of your way and make sure it cant fall or drop so you dont damage your brake line or anything else for that matter.
Remove the rotor. You may need to gently knock it loose.
Now if you turn the wheel to the extreme left or right so you can see behind it you will see 4 bolts holding the whole hub assembly to the "spindle?" (Not sure the correct term or not.) They are 17mm Bolts. Remove them.
After removing them you will notice the hub assembly is stuck on there pretty well. Alot of times these seize on to the spindle and are quite difficult to remove. This is probally the most difficult and time consuming part.
Unclip the abs sensor.
What I found works well is a little mini sledge and a punch or a pry bar. Give the wheel hub some pretty good whacks all around it. Dont worry about damaging the hub its no good anymore anyway. Now you will need to work around the back of the spindle.
I couldnt get a good picture on the car but this is the area you will need to hit with the punch on the old wheel bearing.
Take your Punch and work it around hitting the edge of the wheel hub from the back of the spindle. You will probally need to do this a few times and quite hard.
Once the old hub and Brake dust shield has been removed you will need to get all the corrosion and dirt out of the hole in the spindle where the hub slides into. A wire brush works great for this.
Once the area is clean put the dust shield on the spindle and try to fit the hub into the spindle. Make sure it goes in fairly straight. If it is hard to get in you need to clean your spindle somemore. (The abs sensor points toward the rear of the vehicle)
Insert the bolts and tighten down in a diaganal pattern little by little similar to how you would mount a tire.
Make sure everything is tight plug your sensors back in, attach the rotor and reattach the caliper. Re-install the wheel.
Thats pretty much it! Hopefully this was helpful and clear. If you have any questions let me know or feel free to add any suggestions or comments! Thanks!