You need a pickle fork
Sorry home replacement of body parts is not recommended until Obama care goes into effect.
Can’t you take off the upper A arm?
Put some tension on the ball joint in the direction that it would separate, and then strike the steering knuckle next to the tapered hole very sharply with a heavy hammer.
Put an air hammer on it (the longer the stroke, the better) and put a bucking bar on the knuckle (a sledge hammer or mallet works well for this).
Have at it with the air hammer, and it should pop right out.
can you heat and expand the outside?
I’d be surprised if whacking the knuckle with a big hammer (between the end of the control arm and the backing plate) wouldn’t break the stud loose......leave it just as you have with the end of the stud supported.......put something beneath the lower control arm so it doesn’t fall more than an inch or two when (if, LOL) it breaks loose
one more, re pickle fork.....there are different slot widths....you probably need one with a narrower slot width in order for it to not be too sloppy where it meets with the ball of the stud, which is what it needs to encounter resistance on, not the control arm.....
The pickle for and a dead blow hammer. Also a fire wrench A.K.A torch.
You won’t get the stud out of the joint until you heat the knuckle. You can take the fork and beat on it, but by applying oxy-acetylene type heat (not propane or MAP they don’t put out enough heat) to relieve the fit of the morse taper that is part of the stud and knuckle.
Get some WD40 or equivalent and soak both ball joints.Get a BIG hammer and give it some good whacks right on the knuckle were the ball joint is connected. It should pop right off (keep the castle nut on, (loose) just in case.
If that won't work, you need a special designed puller to do the job. (Sometimes you can rent it from an Autoparts Store, or if you know any professional auto technician, he should have one in his tool box) I have several types on my own.
BTW, forget about the pickle fork...good for cars of the '50's, '60's, and '70's. It will do a lot of damage if you are not careful. Good Luck!
A zip gun will do it.Ask a front end shop about it.
A. Set it on fire.
B. Collect the insurance money.
C. Buy a Ford.
Spray it down with some PB Blaster (designed to penetrate, whereas WD-40 just lubricates). After a thorough coating go inside and watch TV for a while. Then spray it down again, wait a couple minutes.
Hit the outside with a torch for maybe a minute solid. You won’t hurt anything since it’s a huge chunk of metal and the propane won’t get all that hot.
Then go for the pickle fork. If that combination won’t get them apart, it’s probably beyond your ability at home.
should have bought a mac...
Make sure the vehicle is in neutral and the drive line tension is released.
Take it to your local GM dealer and get it fixed b4 Obama stops by and shuts the GM dealership down ...
In the replacement part there should be some bolts, install them and then your jackstand approach should work as you let the weight of the vehicle onto it. A few blows to the sides of the spindle where the bolt goes thru, should free it if the jackstand approach is not enough.
It is also a good idea to put the castle nut on to prevent the sudden release from damaging you, or something else. If you've damaged the threads already, just lash a chain loosely around the upper control arm.