Ok I did a search and could not find what i was needing to know. My wheel bearing is going out on my driver side. I cheek the passenger side and it seems like its tight still. So when i take it to the dealer will they just replace one thats bad or both? Any one know?

they will only fix whats broke

If it's warranty, they fix only what they need to...thier cost. If it's your buck, they'll repair anything you want, needed or not. The service dept. at the dealership I worked at was the financial backbone of the business. Also, many people have had to change only one bearing, ball joint, whatever, and never had problems with the other / same whatevers.

^ Agreed!

If you have tools and even a moderate level of mechanical experience, do it yourself and save mucho $$$$$$.