What year, if it has upper it has to be pre 1989
Yes.
How do you change the lower ball joints on an 2004 envoy
"0" play in lower ball joints
The ball joints are riveted or pressed into the upper and lower control arms, then the spindle is bolted to the ball joints.
You change the control arms, upper and lower. The ball joints are manufactured into the control arms.
Change lower ball joints on a 96 gmC 4 by 4
Replacing a ball joint on a Ford 250 requires removing the wheels, brake assembly, as well as the spindle. From there, the ball joints can be removed and replaced.
You can replace just the ball joints on the lower control arms , but the upper ball joints come with a new control arm
How to change upper and lower ball joints on a 1997 ford explorer all wheel drive?
The lower ball joints have to be pressed out. The upper ball joints are part of the control arm, so the complete upper assembly has to be replaced.
You can't service the lower ball joints by themselves. You must replace the entire lower control arm.