How do you change a lower ball joint on a GMC Vandura 1 ton van?

To change the lower ball joint on a GMC Vandura 1-ton van, first, lift the vehicle and securely support it on jack stands. Remove the wheel, then detach the brake caliper and rotor to access the lower control arm. Unbolt the lower ball joint from the control arm and steering knuckle, then press out the old joint using a ball joint separator tool. Install the new ball joint by reversing the steps, ensuring all bolts are torqued to the manufacturer’s specifications.