GM Service Manual Online
For 1990-2009 cars only
Makes 🢒 HUMMER 🢒 2009 🢒 H2 🢒 Suspension 🢒 Suspension General Diagnosis 🢒 Lower Control Arm Replacement

Special Tools
    • J  43631 Ball Joint Remover
    • J  45851 Ball Joint Separator Protector Adaptors

Removal Procedure
  1. Raise and support the vehicle. Refer to Lifting and Jacking the Vehicle.
  2. Remove the tire and wheel. Refer to Tire and Wheel Removal and Installation.
  3. Remove the stabilizer shaft links from the lower control arm. Refer to Stabilizer Shaft Link Replacement.
  4. Remove the wheel drive shaft. Refer to Wheel Drive Shaft Replacement.
  5. Remove the shock absorber lower nut and the bolt. Refer to Shock Absorber Replacement.
  6. Remove the torsion bars. Refer to Torsion Bar and Support Assembly Replacement.
  7. Remove the lower ball joint stud nut. Discard the nut.

    8. Object Number: 675143 Size: SH

    Note: DO NOT re-use the lower ball joint nut. Discard the nut and replace with NEW.

  8. Using the J  43631 remover  (1) and the J  45851 adaptors , remove the lower ball joint stud from the steering knuckle.

    9. Object Number: 793280 Size: SH
  9. Remove the lower control arm nuts and the washers.
  10. Remove the lower control arm bolts. Discard the bolts.

Installation Procedure
  1. Install the lower control arm.

    2. Object Number: 793280 Size: SH
  2. Install NEW lower control arm bolts.

    3. Object Number: 392158 Size: SH
  3. Install the washers with the shoulder facing the arm.

    4. Caution: Refer to Fastener Caution in the Preface section.

  4. Install the lower control arm retaining nuts and tighten to 140 N·m + 150° (103 lb ft) + 150°.
  5. Install the lower ball joint stud to the steering knuckle.
  6. Install the NEW lower ball joint nut and tighten to 50 N·m (37 lb ft) plus 120°.
  7. If unable to use a torque angle meter, perform the following.
    8. • After torquing the lower ball joint nut to the specifications, mark a reference point on the nut and the steering knuckle.
    • Rotate the lower ball joint two flats of the nut. This will equal the additional 120°.
  8. Install the torsion bars. Refer to Torsion Bar and Support Assembly Replacement.
  9. Install the shock absorber lower nut and bolt. Refer to Shock Absorber Replacement.
  10. Install the wheel drive shaft. Refer to Wheel Drive Shaft Replacement.
  11. Install the stabilizer shaft links to the lower control arm. Refer to Stabilizer Shaft Link Replacement.
  12. Install the tire and wheel. Refer to Tire and Wheel Removal and Installation.
  13. Lower the vehicle.
  14. Verify the wheel alignment. Refer to Wheel Alignment Specifications.