What kind of ball joints? If they're moog, there are two lines - OEM replacement and heavy duty. Also there are splined and non-splined models in each line. If that wasn't the first ball joint replacement, and the ones which came out were splined, you have to stay with splined ball joints or dimple the control arms. It's rare for them to go bad in only 20k but it's not unheard of. I'm assuming you're keeping them greased if they have zerk fittings. If not, then that maybe makes it a tiny bit more likely they're shot.
Check the nut on the pitman arm; another thread recently the guy has his pitman arm locknut keep backing off and his steering was all over the place. It was the right part, but sounded like it wasn't fitting perfectly or the "lock" part of "locknut" wasn't cutting the mustard.
Hope this helps.
Check the nut on the pitman arm; another thread recently the guy has his pitman arm locknut keep backing off and his steering was all over the place. It was the right part, but sounded like it wasn't fitting perfectly or the "lock" part of "locknut" wasn't cutting the mustard.
Hope this helps.