pmezo33 said:
I had my front right wheel bearing done at about 70k miles under warranty. The rest have been fine.
It's pretty easy to diagnose which one is making the noise. Get on the highway and listen to the noise as you're turning at high speeds around corners. If you're turning left and you hear the noise, it's your right bearing. If you're turning right and you hear the noise, it's your left wheel bearing. Front or back should be pretty obvious based on noise.
If you want to do it yourself, it's a pretty straight forward job. You don't need to press the bearing onto the hub - it comes as an assembly. Just pull the hub and install a new one.
Same basic idea, but I get on a back road and do some light slalom maneuvers to identify which side is making noise. Nothing aggressive is required, just enough to load the bearings. If you really notice it howl at a particular speed, do your slaloms there. I had a bad wheel bearing in my old F150, and it made a lot of noise in the 25-30MPH range, but would quiet down quite a bit outside of that. Good luck!
As pmezo indicated, you should be able to turn the noise off/on depending on which direction your are steering.