Just a note:

When a shop snaps a stud, it is in their best interest to repair it using the least amount of time/energy and therefore, money. Time spent fixing their screw ups is time lost working on customer's vehicles for pay.

Pulling the stud into place with an nut and an impact wrench will get the job done, but it is no where close to the correct way to do it. Studs are not made to endure the forces required to do such a thing. But, it is often the easiest, fastest and least costly.

While it can't be proven, I would suspect it shortens the lives of the studs, severely or at the least, sets them up for future failure. Ironically, this is about the time when the shop tells the customer, "Well, you know these Isuzus, they have soft studs and we are going to have to charge you to fix it" even when they were the ones who snapped it.

Personally, I would not do it, nor would I suggest someone else do it. Having a press, or a shop us a press to put studs into an axle ($20, maybe) is the correct way to do it. Barring that, I would at the least drive them in with a hammer so you can tell when they are seated. The nut method will not fully set them, it just can't. You can tell when they are seated with a hammer.

Access to do such is probably questionable. I know on the 12-bolt, there is little access d/t the backing plate and bearing retainer, but it is possible.

Michael