GM Service Manual Online
For 1990-2009 cars only
Makes 🢒 Chevrolet 🢒 2003 🢒 Astro - 4WD 🢒 Suspension 🢒 Rear Suspension 🢒 Spring Shackle Replacement

Removal Procedure
  1. Raise and support the vehicle. Refer to Lifting and Jacking the Vehicle in General Information.
  2. Support the rear axle.

    3. Object Number: 178951 Size: SH
  3. Remove the leaf spring to spring shackle mounting bolt and nut.

    4. Object Number: 178961 Size: SH
  4. Remove the shock absorber lower mounting bolt and nut.

    5. Notice: Do not let the axle hang by the brake hose. Damage to the hose may occur. Always support the axle and the body separately.

  5. Lower the rear axle.

    6. Object Number: 178948 Size: SH
  6. Remove the spring shackle mounting nut.
  7. Remove the spring shackle mounting bolt and the spring shackle.

Installation Procedure

    Object Number: 178948 Size: SH
  1. Install the spring shackle to the frame.
  2. Install the spring shackle mounting 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.

  3. Install the spring shackle mounting nut.

    4. Tighten
    Tighten the spring shackle mounting nut to 140 N·m (103 lb ft).

  4. Raise the rear axle.

    5. Object Number: 178961 Size: SH
  5. Install the lower shock absorber mounting bolt and nut.

    6. Tighten
    Tighten the lower shock absorber mounting nut to 107 N·m (79 lb ft).

  6. Install the leaf spring to spring shackle mounting bolt and nut.

    7. Tighten
    Tighten the leaf spring to spring shackle mounting nut to 100 N·m (74 lb ft).

  7. Remove the rear axle support.
  8. Lower the vehicle.