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Home >> Chevrolet >> 2002 >> Blazer 4D Utility, 4WD, Part Time >> Repair and Diagnosis >> External Pages >> Different car >> Section 916 (Front Suspension System) >> Repair Instructions >> Upper Ball Joint Replacement (4WD) >> Removal Procedure

Removal Procedure

WARNING: This page is about a different car, the 2003 GMC Sonoma, 2003 GMC Jimmy, 2003 Chevrolet S10 Pickup, and 2003 Chevrolet Blazer. However, it is still accessible from the selected car via links, so may be relevant.
CAUTION: Refer to FLOOR JACK CAUTION in Cautions and Notices.
  1. Raise and suitably support the vehicle with safety stands. Refer to LIFTING AND JACKING THE VEHICLE in General Information.
  2. Remove the tire and wheel. Refer to TIRE AND WHEEL REMOVAL AND INSTALLATION in Tires and Wheels.
  3. Unload the torsion bar. Refer to TORSION BAR AND SUPPORT ASSEMBLY REPLACEMENT .
  4. Remove the wheel speed sensor wiring harness bracket and brake hose bracket mounting bolt and nut from the upper control arm.
  5. Disconnect the wheel speed sensor wiring harness bracket and brake hose bracket from the upper control arm.
  6. Remove the cotter pin from the upper ball joint retaining nut.
  7. Remove the upper ball joint retaining nut.
  8. Using a pry bar, placed under the upper control arm and on top of the frame, pry upward.
  9. With the aid of a helper, carefully hammer on the steering knuckle in the area of the upper ball joint stud in order to release the stud from the steering knuckle.
  10. Remove the upper ball joint from the steering knuckle.
    1. 10.1 Place a block under the upper control arm to keep the control arm and the steering knuckle out of the way.
    2. 10.2 Suspend the steering knuckle to prevent straining the brake line.
      Fig 1: Removing Upper Ball Joint From Steering Knuckle
      G01467641Courtesy of GENERAL MOTORS CORP.
  11. Remove the rivets from the upper ball joint. Use a 3.175 mm (1/8 in) drill to cut a 6.35 mm (1/4 in) deep hole in the center of each rivet.
    Fig 2: Cutting Hole In Center Of Rivet
    G01467642Courtesy of GENERAL MOTORS CORP.
  12. Drill the rivet heads away using a 12.7 mm (1/2 in) drill.
    Fig 3: Drilling Rivet Heads Away
    G01467643Courtesy of GENERAL MOTORS CORP.
  13. Remove the rivets using a pin punch.
  14. Remove the upper ball joint.
    Fig 4: Removing Rivet Using Pin Punch
    G01467644Courtesy of GENERAL MOTORS CORP.
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