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Removal Procedure

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  1. Raise and support the vehicle. 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. Disconnect the electronic suspension control (ESC) link rod from the sensor, if equipped. Refer to Front Position Sensor Link Assembly Replacement - Electronic Suspension in Electronic Suspension Control.
    4. Fig 1: View Of Retaining Bolts For Brake Hose And Wheel Speed Sensor Brackets
    GM367084Courtesy of GENERAL MOTORS CORP.
  4. Remove the retaining bolt for the brake hose and the wheel speed sensor brackets.
  5. Remove the wheel drive shaft. Refer to Wheel Drive Shaft Replacement in Wheel Drive Shafts.
    6. Fig 2: Upper Ball Joint Retaining Nut
    GM830521Courtesy of GENERAL MOTORS CORP.
  6. Remove the upper ball joint retaining nut.
    7. Fig 3: Disconnecting Upper Control Arm From The Steering Knuckle
    GM853946Courtesy of GENERAL MOTORS CORP.
  7. Disconnect the upper control arm from the steering knuckle using the J 43631  and J 45851  . See Special Tools and Equipment .
    8. Fig 4: Upper Control Arm, Nuts, Bolts & Adjustment Cams (25/35 Series 2WD)
    GM376754Courtesy of GENERAL MOTORS CORP.
  8. Remove the upper control arm nuts and the adjustment cams (2) for the 15 Series 2WD, 4WD, and 25/35 Series 2WD.
  9. Remove the upper control arm bolts (4) for the 15 Series 2WD, 4WD, and 25/35 Series 2WD.
    10. Fig 5: Upper Control Arm, Nuts, Bolts & Adjustment Cams (25/35 Series 4WD)
    GM376756Courtesy of GENERAL MOTORS CORP.
  10. Remove the upper control arm nuts and the adjustment cams (2) for the 25/35 Series 4WD.
  11. Remove the upper control arm bolts (4) for the 25/35 Series 4WD.
  12. Remove the upper control arm.
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