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Installation Procedure

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  1. Install the upper control arm.
  2. Install the upper control arm bolts (4) for the 25/35 Series 4WD.
    NOTE: Refer to FASTENER NOTICE in Cautions and Notices.
  3. Install the upper control arm nuts and the adjustment cams (2) 25/35 Series 4WD.

    Tighten 

    Tighten the nuts to 190 N.m (140 lb ft).

    Fig 1: Installing Upper Control Arm & Bolts
    G01455449Courtesy of GENERAL MOTORS CORP.
  4. Install the upper control arm bolts (4) for the 15 Series 2WD, 4WD, and 25/35 Series 2WD.
  5. Install the upper control arm nuts and the adjustment cams (2) for the 15 Series 2WD, 4WD, and 25/35 Series 2WD.

    Tighten 

    Tighten the nuts to 190 N.m (140 lb ft).

    Fig 2: Installing Upper Control Arm Bolts & Nuts
    G01455450Courtesy of GENERAL MOTORS CORP.
  6. Connect the upper control arm to the steering knuckle.
  7. Install the wheel drive shaft. Refer to AXLE SHAFT in Wheel Drive Shafts.
  8. Install the new nut to the upper ball joint stud.

    Tighten 

    Tighten the nut to 50 N.m (37 lb ft).

    Fig 3: Installing Nut To Upper Ball Joint Stud
    G01455451Courtesy of GENERAL MOTORS CORP.
  9. Install the retaining bolts for the brake hose and wheel speed sensor brackets.

    Tighten 

    Tighten the bolts to 9 N.m (80 lb in).

  10. Connect the ESC link rod to the sensor, if equipped. Refer to FRONT POSITION SENSOR LINK ASSEMBLY REPLACEMENT - ELECTRONIC SUSPENSION in Electronic Suspension Control under REPAIR INSTRUCTIONS .
  11. Install the tire and wheel. Refer to TIRE AND WHEEL REMOVAL AND INSTALLATION in Tires and Wheels.
  12. Remove the safety stands.
  13. Lower the vehicle.
  14. Verify the wheel alignment. Refer to MEASURING WHEEL ALIGNMENT (WITH REAR WHEEL STEERING) or MEASURING WHEEL ALIGNMENT (WITHOUT REAR WHEEL STEERING) in Wheel Alignment under REPAIR INSTRUCTIONS .
    Fig 4: Installing Retaining Bolt For Brake Hose & Wheel Speed Sensor Brackets
    G01455452Courtesy of GENERAL MOTORS CORP.