GM Service Manual Online
For 1990-2009 cars only

    Important: 

       • The vehicle must be stable and should not rock on the floor stands.
       • Wipe the ball joints clean and inspect the seals for cuts or for tears. If the seal is cut or torn, replace the ball joint.

  1. Raise the vehicle and position the floor stands under both lower control arms as nearly as possible to each ball stud. Refer to Lifting and Jacking the Vehicle in General Information.

  2. Object Number: 2009  Size: SH
  3. Position the dial indicator against the wheel rim.

  4. Object Number: 190281  Size: SH
  5. Pry between the lower control arm and the steering knuckle while reading the dial indicator. Vertical deflection on the dial indicator should not exceed 1.19 mm (0.046875 in).
  6. If the dial indicator reading exceeds 1.19 mm (0.046875 in), replace the ball stud.
  7. Anytime the ball stud is disconnected from the steering knuckle, test for looseness. If you are able to twist the ball stud in its socket with your fingers, replace the ball stud.
  8. Lower the vehicle.