Proper tools and equipment and knowing what year the car is to get parts.How to change ball joints on a cutlass ceira?Simple answer is you take off the old ones and put on new ones.
More complicated answer is, if you have to ask how to do it, you should bring it to someone who knows how to do it already, or at least have someone with you who knows how to do it. It'll suck to get them off, and not be able to get the new ones on. There are tricks and procedures.
