[xjpioneer]

Well there are the unit bearings which are the hub assembly which go bad and if that is the case then, yeah they are not that easy to replace. You have to unbolt them and you might want to spray them down with a good penetrating lube before you try to loosen, not required but it will be alot easier to pull them off and no broken bolts. It is a 12point socket MAKE SURE YOU DONT USE ANYTHING ELSE, or you will round it off. They hubs are an assembly with the bearings all in one so it makes it kind of easy to installed and they come prepacked with grease. They about 100 bucks each at the local parts store. If its not that then the only other bearings it the front axle is your bearings on the carrier in the differential. So check the hubs and if it not one then it the other. My bet is on the hubs, I had the same problem and thats what it ended up being.