When changing a hub and bearing assembly on a 2003 4wd Yukon, what should I be careful of?

What should I clean the mating surfaces with and should I use a sealer or is that surface just a machine fit? Do I need grease for the bearing or is it completely factory greased? 80k and the bearing has apparently loosenned. Wheel shakes back and forth.
When changing a hub and bearing assembly on a 2003 4wd Yukon, what should I be careful of?
With that many miles you should take it to a mechanic..
When changing a hub and bearing assembly on a 2003 4wd Yukon, what should I be careful of?
dirt, lack of grease, loose or worn bearings, get the book don't take the chance, 12 dollars, because you put it together wrong, too loose etc, you can kill yourself and all who ride with you, it is worth a child's, or wife's life. think about it
It is a sealed unit,which needs no grease.just be careful with the wheel speed sensor wires coming out from back of brg assembly,its easy to cut or pull the wires out of the new one when installing.,and don`t over-torque the nut on the drive-axle.Ck torque specs.
What you should be careful of, is if it takes you more than 30 minutes to change it. Remove the caliper, rotor, and hub nut. The hub assembly is a bolt on. Just unbolt it, and bolt the new one on. You might want to get the axle hub nut loose before raising the vehicle and removing the wheel. That thing is a bear.