K 2500 Truck 4WD V8-379 6.2L DSL VIN C FI (1989)
Figure 3
Figure 4
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Pry between the lower control arm and the outer race on K models or between the lower control arm and steering knuckle on C models while
reading the dial indicator. This will show vertical looseness in the ball joint (Figures 3 and 4).
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If the dial indicator reading is more than 1 mm (0.040 inch) for a maintenance free ball joint or 2 mm (0.080 inch) for a greaseable ball joint,
replace the ball joint.
NOTE:
Do not pry between the lower control arm and the drive axle seal or in such a manner that the ball joint seal is contacted. Damage to the seal
will result.
