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Home >> Chevrolet >> 2002 >> Blazer 4D Utility, 4WD, Part Time >> Repair and Diagnosis >> Suspension >> Front Suspension >> Front Suspension System >> Repair Instructions >> Lower Control Arm Replacement (4WD) >> Installation Procedure

Installation Procedure

IMPORTANT: Install the front leg of the lower control arm into the crossmember before installing the rear leg into the frame bracket.
  1. Install the lower control arm to the crossmember and to the frame bracket.
  2. Install the lower control arm mounting bolts in the direction shown.
    NOTE: Refer to FASTENER NOTICE in Cautions and Notices.
  3. Install the lower control arm mounting nuts.

    Tighten 

    • Tighten the nuts with the lower control arm at the proper trim height. Refer to TRIM HEIGHT INSPECTION PROCEDURE .
    • Tighten the nuts and the bolts with the front suspension loaded.
      Fig 1: Installing Lower Control Arm Mounting Nuts (4WD)
      G01670461Courtesy of GENERAL MOTORS CORP.
    • Tighten the lower control arm front nut and the rear nut to 110 N.m (81 lb ft).
  4. Install the steering knuckle to the lower ball joint.
  5. Install the lower ball joint retaining nut.

    Tighten 

    Tighten the lower ball joint retaining nut to 108 N.m (79 lb ft).

  6. Install a new cotter pin to the lower ball joint retaining nut.
  7. Install the upper ball joint to the steering knuckle.
  8. Install the upper ball joint retaining nut.

    Tighten 

    Tighten the upper ball joint retaining nut to 83 N.m (61 lb ft).

  9. Install a new cotter pin to the upper ball joint retaining nut.
    Fig 2: Installing New Cotter Pin To Upper Ball Joint Retaining Nut (4WD)
    G01670462Courtesy of GENERAL MOTORS CORP.
  10. Install the outer tie rod to the steering knuckle.
  11. Install the outer tie rod retaining nut.

    Tighten 

    Tighten the outer tie rod retaining nut to 53 N.m (39 lb ft).

  12. Install a new cotter pin to the outer tie rod retaining nut.
    Fig 3: Installing Outer Tie Rod To Steering Knuckle (4WD)
    G01670463Courtesy of GENERAL MOTORS CORP.
  13. Connect the wheel speed sensor electrical connection.
  14. Install the wheel speed sensor wiring harness bracket to the frame.
  15. Install the wheel speed sensor wiring harness and brake hose bracket mounting nut and bolt to the upper control arm.

    Tighten 

    Tighten the wheel speed sensor wiring harness and brake hose bracket mounting nut to 22 N.m (16 lb ft).

  16. Remove the front brake rotor. Refer to BRAKE ROTOR -- FRONT in Disc Brakes.
    Fig 4: Installing Wheel Speed Sensor Wiring Harness And Brake Hose Bracket Mounting Nut And Bolt To The Upper Control Arm (4WD)
    G01670464Courtesy of GENERAL MOTORS CORP.
  17. Install the wheel drive shaft retaining nut and washer.

    Tighten 

    Tighten the wheel drive shaft retaining nut to 140 N.m (103 lb ft).

    Fig 5: Installing Wheel Drive Shaft Retaining Nut And Washer (4WD)
    G01670465Courtesy of GENERAL MOTORS CORP.
  18. Install the shock absorber lower mounting bolt.

    Tighten 

    Tighten the shock absorber lower mounting bolt to 73 N.m (54 lb ft).

    Fig 6: Installing Shock Absorber Lower Mounting Bolt (4WD)
    G01670466Courtesy of GENERAL MOTORS CORP.
  19. Raise the stabilizer shaft.
  20. Install the stabilizer shaft bracket bolts.

    Tighten 

    Tighten the stabilizer shaft bracket bolts to 65 N.m (48 lb ft).

  21. Install the stabilizer shaft link to the lower control arm. Refer to Stabilizer Shaft Link Replacement (RWD)  or Stabilizer Shaft Link Replacement (4WD) .
  22. Install the steering linkage shield. Refer to STEERING LINKAGE SHIELD REPLACEMENT in Steering Linkage.
  23. Install the torsion bar. Refer to Torsion Bar and Support Assembly Replacement .
  24. Install the tire and the wheel. Refer to TIRE AND WHEEL REMOVAL AND INSTALLATION in Tires and Wheels.
  25. Lower the vehicle.
    Fig 7: Installing Shock Absorber Lower Mounting Bolt (4WD)
    G01670467Courtesy of GENERAL MOTORS CORP.
  26. Check the front wheel alignment. Refer to MEASURING WHEEL ALIGNMENT in Wheel Alignment.
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