GM Service Manual Online
For 1990-2009 cars only

Removal Procedure

Tools Required

J 21058 Bushing Remover and Installer

  1. Set the parking brake.
  2. Block the front wheels.
  3. Raise the vehicle frame using a suitable lifting device in order to remove the weight of the vehicle from the spring assembly.
  4. Place jack stands under the rear axle in order to support the frame rearward of the of the rear axle.
  5. Remove the rear wheel assembly, if necessary. Refer to Tire and Wheel Removal and Installation (Dual/Rear) in Tires and Wheels.

  6. Object Number: 202137  Size: LH
  7. For taperleaf springs, remove the following components:
  8. • The rear spring hanger rebound nut
    • The washer
    • The bolt
  9. For multileaf springs, remove the rear spring hanger bolt.
  10. Remove the following components:
  11. • The lower shock absorber nut
    • The washer
    • The insulator
    • The shock
    • The washer (if equipped)
  12. Remove the U-bolt nuts and the washers.
  13. Remove the following components:
  14. • The U-bolt anchor plate
    • The seat
    • The shock absorber bracket (if equipped)
  15. Remove the U-bolts.
  16. Lower the axle slightly in order to gain access to the spring front eye bolt.
  17. Remove the following components:
  18. • The front eye bolt nut
    • The washer
    • The eye bolt
  19. Raise the frame in order to provide clearance between the spring assembly and hanger bracket.

  20. Object Number: 202316  Size: SH
  21. Remove the bushing using the J 21058 .

Installation Procedure

Tools Required

J 21058 Bushing Remover and Installer


    Object Number: 202322  Size: SH
  1. Install the eye bushing using the J 21058 .
  2. Lower the frame slightly in order to install the spring front eye bolt.
  3. Notice: Use the correct fastener in the correct location. Replacement fasteners must be the correct part number for that application. Fasteners requiring replacement or fasteners requiring the use of thread locking compound or sealant are identified in the service procedure. Do not use paints, lubricants, or corrosion inhibitors on fasteners or fastener joint surfaces unless specified. These coatings affect fastener torque and joint clamping force and may damage the fastener. Use the correct tightening sequence and specifications when installing fasteners in order to avoid damage to parts and systems.

  4. Install the following components:
  5. • The spring front eye bolt

    Tighten
    Tighten the spring front eye bolt to 415 N·m (305 lb ft).

    • The washer
    • The nut
  6. Lower the frame until the hanger touches the surface of the rear spring eye.

  7. Object Number: 202137  Size: LH
  8. For taperleaf springs, install the following components:
  9. • The rear spring hanger rebound bolt
    • The washer
    • The nut

    Tighten
    Tighten the rear hanger rebound bolt to 415 N·m (305 lb ft).

  10. Install the U-bolt spacer over the center bolt.
  11. Install the U-bolts into the spacer grooves.
  12. Install the U-bolt anchor plate and the seat.
  13. Install the shock absorber bracket (if equipped).
  14. Important: In order to properly tighten the U-bolts, tighten the bolts in the specified sequence.

  15. Install the U-bolt nuts and washers according to the next two steps.
  16. For 20 mm (0.78 in) U-bolts:
  17. Tighten

    1. Tighten U-bolt nuts to 100 N·m (74 lb ft) in sequence.
    2. Tighten U-bolt nuts to 250 N·m (184 lb ft) in sequence.
    3. Tighten U-bolt nuts to 375-400 N·m (276-295 lb ft) in sequence.
  18. For 22 mm (0.875 in) U-bolts:
  19. Tighten

    1. Tighten U-bolt nuts to 150 N·m (111 lb ft) in sequence.
    2. Tighten U-bolt nuts to 275 N·m (203 lb ft) in sequence.
    3. Tighten U-bolt nuts to 425-450 N·m (313-332 lb ft) in sequence.
  20. For multileaf springs, install the rear spring hanger bolt.
  21. Tighten
    Tighten the rear spring hanger bolt. Ensure that a minimum of 84.07 mm (3.36 in) is between the ears of the rear spring hanger.

  22. Raise the vehicle.
  23. Remove the jack stands.
  24. Lower the vehicle.
  25. Remove the blocks from the front wheels.