K 1500 Suburban 4WD V8-5.3L VIN T (2002)
7. Place a J8001 dial indicator (1) against the spindle in order to show vertical movement.
8. Pry between the lower control arm (2) and the outer bearing race (1) while reading the dial indicator. This shows vertical looseness in the ball
joints. The lower ball joint is not preloaded and may show some looseness.
9. If the dial indicator reading is more than 3.18 mm (0.125 inch), replace the lower ball joint.
10. If the lower ball joint is within specifications, and there is too much horizontal looseness, check the upper control arm for wear. If you find any
looseness or can twist the stud with your fingers, replace the upper control arm.