Removal Procedure

Raise and support the vehicle. Refer to LIFTING & JACKING THE VEHICLE in General Information.
Remove the tire and wheel. Refer to TIRE AND WHEEL REMOVAL AND INSTALLATION in Tires and Wheels.
Unload the torsion bar. Refer to Torsion Bar and Support Assembly Replacement .
Remove the wheel drive shaft. Refer to AXLE SHAFT in Driveline/Axle.
Drill a pilot hole in the lower ball joint rivets using a 3.175 mm (1/8 in) drill to cut a 6.35 mm (1/4 in) deep hole in the center of each rivet.

Fig 1: Drilling Pilot Hole In Lower Ball Joint Rivets Using 3.175 mm (1/8 in) Drill (RWD)
Courtesy of GENERAL MOTORS CORP.
Drill the rivet heads away using a 12.7 mm (1/2 in) drill.

Fig 2: Drilling Rivet Heads Away Using 12.7 mm (1/2 in) Drill (RWD)
Courtesy of GENERAL MOTORS CORP.
Remove the rivets using a pin punch.
Remove the lower ball joint from lower control arm.

Fig 3: Removing Rivets Using Pin Punch (RWD)
Courtesy of GENERAL MOTORS CORP.