GM Service Manual Online
For 1990-2009 cars only
Makes 🢒 GMC_Truck 🢒 2004 🢒 GMC C Sierra - 2WD 🢒 Suspension 🢒 Rear Suspension 🢒 Leaf Spring Replacement

Removal Procedure
  1. Raise and support the vehicle. Refer to Lifting and Jacking the Vehicle in General Information.
  2. Support the rear axle independently in order to relieve the tension on the leaf springs.
  3. Remove the trailer hitch if equipped. Refer to Trailer Hitch Replacement in Frame and Underbody.
  4. Remove the fuel tank for left side applications. Refer to Fuel Tank Replacement in Engine Controls -4.8L, 5.3L, 6.0L, or Fuel Tank Replacement in Engine Controls - 4.3L or Fuel Tank Replacement in Engine Controls -6.6L, or Fuel Tank Replacement in Engine Controls -8.1L.

    5. Object Number: 348393 Size: SH
  5. Remove the U-bolt nuts.
  6. Remove the U-bolts.
  7. Remove the spring spacer.
  8. Remove the anchor plate.

    9. Object Number: 361791 Size: SH
  9. Remove the rear spring hanger bracket nut and bolt.

    10. Object Number: 361767 Size: SH
  10. Remove the front spring bracket bolt.
  11. Remove the leaf spring assembly from the vehicle.

Installation Procedure

    Object Number: 361767 Size: SH
  1. Install the leaf spring assembly to the vehicle.
  2. Install the front spring hanger bracket bolt.
  3. Install the front spring hanger bracket nut.

    4. Object Number: 361791 Size: SH
  4. Install the rear spring hanger bracket bolt.
  5. Install the rear spring hanger bracket nut.

    6. Important: Do not reuse the U-bolts.


    Object Number: 348393 Size: SH
  6. Install the spring spacer.
  7. Install the U-bolts.
  8. Install the anchor plate.

    9. Notice: Refer to Fastener Notice in the Preface section.

  9. Install the U-bolt nuts.

    10. Tighten

        • For 15 series without rear wheel steering tighten the U-bolt nuts to 72 N·m (53 lb ft).
        • For all 15 series with rear wheel steering and 15HD/25/35/36 series tighten the U-bolts to 150 N·m(110 lb ft )
        • Tighten the front hanger bracket nut to 150 N·m (110 lb ft).
        • Tighten the rear hanger bracket nut to 95 N·m (70 lb ft).
  10. Install the fuel tank for left side applications. Refer to Fuel Tank Replacement in Engine Controls- 4.8L, 5.3L, 6.0L, or Fuel Tank Replacement in Engine Controls - 4.3L, or Fuel Tank Replacement in Engine Controls -6.6L, or Fuel Tank Replacement in Engine Controls -8.1L.
  11. Install the trailer hitch, if equipped. Refer to Trailer Hitch Replacement in Frame and Underbody.
  12. Remove the rear axle support.
  13. Lower the vehicle.