2003 Nissan Sentra broken lug stud.

You can usually remove the broken stud and press a new stud in through the back of the hub, but you may have to remove the hub and bearing to do it. On the front, if the steering knuckle is in the way, you'll have to remove the entire knuckle from the strut, tie rod and ball joint and take it to a shop with a hydraulic press to remove the hub. On the back, it's much easier. Remove the center dust cap, cotter pin and axle nut and the hub should pull right off with the wheel bearings.