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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 Control Arm 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.
  1. Raise the front of the vehicle. Refer to LIFTING AND JACKING THE VEHICLE in General Information.
    • Support the lower control arm with floor stands.
    • Place floor stands under the lower control arms as far outboard as possible (between spring seats and ball joint) to maintain maximum leverage.
  2. Remove the tire and wheel assembly. Refer to TIRE AND WHEEL REMOVAL AND INSTALLATION in Tires and Wheels.
    Fig 1: Supporting Lower Control Arm
    G01467679Courtesy of GENERAL MOTORS CORP.
  3. Unload the torsion bar. Refer to TORSION BAR AND SUPPORT ASSEMBLY REPLACEMENT .
  4. Remove the shock absorber. Refer to SHOCK ABSORBER REPLACEMENT (RWD)  or SHOCK ABSORBER REPLACEMENT (4WD) .
  5. Remove the cotter pin from the upper ball joint stud.
  6. Remove the upper ball joint retaining nut.
  7. Using a pry bar, placed under the upper control arm and on top of the frame, pry upward.
  8. 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.
  9. Remove the upper ball joint from the steering knuckle.
    Fig 2: Removing Upper Ball Joint From Steering Knuckle
    G01467680Courtesy of GENERAL MOTORS CORP.
  10. Remove the upper control arm retaining nuts.
  11. Remove the upper control arm outer cams.
  12. Remove the upper control arm bolts.
  13. Remove the upper control arm inner cams.
  14. Remove the upper control arm from the frame.
    Fig 3: Removing Upper Control Arm From Frame
    G01467681Courtesy of GENERAL MOTORS CORP.
  15. Remove the upper control arm bumper nut.
  16. Remove the upper control arm bumper from the upper control arm.
    Fig 4: Upper Control Arm Bumper
    G01467682Courtesy of GENERAL MOTORS CORP.
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