Blazer 4WD V6-4.3L VIN X (2005)
2. Notice: Do not pry between the lower arm and the wheel drive shaft boot or in such a manner that the ball joint seal is contacted. Damage to the
wheel drive shaft boot will result (4WD).
For 4WD vehicles, place a J 8001 dial indicator (1) against the spindle in order to show vertical movement.
3. Pry between the lower control arm (2) and the outer bearing race (1) while reading the dial indicator. This shows vertical looseness in the lower
ball joints. The lower ball joint may show some looseness.
4. If the dial indicator reading is more than 3.18 mm (0.125 inch), replace the lower ball joint.
5. If the lower ball joint is within specifications, and there is too much horizontal looseness, check the upper ball joint for wear.
1. Disconnect the upper ball joint from the steering knuckle.
2. If you find any looseness or can twist the stud with your fingers, replace the upper ball joint.
