GM Service Manual Online
For 1990-2009 cars only
Makes 🢒 GMC_Truck 🢒 2004 🢒 Sonoma Pickup - 2WD 🢒 Suspension 🢒 Rear Suspension 🢒 Spring Shackle Replacement

Removal Procedure

    Object Number: 497441 Size: SH
  1. Raise and suitably support the vehicle. Refer to Lifting and Jacking the Vehicle in General Information.
  2. Remove the fuel tank (2-door utilities only). Refer to Fuel Tank Replacement in Engine Controls-4.3 L.
  3. Remove the EVAP canister (2-door utilities only), if necessary. Refer to Evaporative Emission Canister Replacement in Engine Controls-4.3 L.
  4. Remove the spare tire, if necessary.
  5. Disconnect rear exhaust hangers and lower exhaust system, if necessary.
  6. Support the rear axle.
  7. Remove the frame to spring shackle mounting nut and bolt.
  8. Remove the leaf spring to spring shackle mounting nut and bolt.
  9. Remove the spring shackle from the vehicle.

Installation Procedure

    Object Number: 497441 Size: SH
  1. Install the spring shackle to the vehicle.
  2. Install the spring shackle to leaf spring mounting bolt and nut.

    3. Do not tighten the nut.

  3. Install the frame to the spring shackle mounting bolt and nut.

    4. Do not tighten the nut.


    Object Number: 497445 Size: SH
  4. Raise the axle support so that there is a distance of 164-176 mm (6.46-6.94 in) between the axle tube and the metal surface of the bumper bracket (1).

    5. 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.

  5. Tighten the spring shackle mounting nuts.

    6. Tighten
    Tighten the spring shackle mounting nuts to 122 N·m (89 lb ft).

  6. Remove rear axle support.
  7. Raise exhaust system and connect rear exhaust hangers, if necessary.
  8. Install the spare tire, if necessary.
  9. Install the EVAP canister (2-door utilities only), if necessary. Refer to Evaporative Emission Canister Replacement in Engine Controls - 4.3 L.
  10. Install the fuel tank (2-door utilities only). Refer to Fuel Tank Replacement in Engine Controls - 4.3 L.
  11. Lower the vehicle.