C 2500 Suburban 2WD V8-454 7.4L VIN J SFI (1998)
5. Pry between the lower control arm and the outer race (2) while reading the dial indicator. This shows vertical looseness in the ball joints.
5.1. The indicator reading should be no more than 2 mm (0.08 in).
5.2. If the reading is too high, replace the ball joint.