GM Service Manual Online
For 1990-2009 cars only
Makes 🢒 Chevrolet 🢒 2009 🢒 Express - AWD 🢒 Preface 🢒 Dangers, Warnings, and Cautions 🢒 Leaf Spring Replacement

Removal Procedure

    Object Number: 830223 Size: SH
  1. Raise and support the vehicle. Refer to Lifting and Jacking the Vehicle
  2. Support the rear axle independently in order to relieve the tension on the leaf springs.
  3. Remove the leaf spring U-bolt nuts.
  4. Remove the leaf spring U-bolts.
  5. Remove the leaf spring spacer.
  6. Remove the leaf spring anchor plate.

    7. Object Number: 830230 Size: SH
  7. Remove the mounting bolt and nut (3) from the leaf spring mounting bracket (4).
  8. Remove the leaf spring (1) and spring shackle (5) as an assembly.

    9. Object Number: 830236 Size: SH
  9. Remove the leaf spring to the front hanger bracket mounting nut and bolt.
  10. Remove the leaf spring from the vehicle.
  11. Remove the shackle from the leaf spring.

Installation Procedure

Note: 

   • Install front and rear mounting bolt loose. DO NOT tighten the front and rear mounting bolts until the vehicle is at curb height.
   • Tighten the U-bolts for the leaf spring before the vehicle is at curb height.

  1. Perform the following procedure before installing the front hanger bracket mounting bolt.
    2. 1.1. Remove all traces of the original adhesive patch.
    1.2. Clean the threads of the bolt with brake parts cleaner or the equivalent and allow to dry.
    1.3. Apply Threadlocker GM P/N 12345493 (Canadian P/N 10953488) to the threads of the bolt.
  2. Install the shackle on the leaf spring.

    3. Object Number: 830236 Size: SH
  3. Install the leaf spring to the vehicle.
  4. Loosely install the leaf spring to the front hanger bracket mounting bolt and nut.

    5. Object Number: 830230 Size: SH
  5. Install the leaf spring (1) to the leaf spring mounting bracket (4).

    6. Object Number: 830223 Size: SH

    Note: Do not reuse the leaf spring U-bolts.

  6. Install the leaf spring spacer.
  7. Install the leaf spring U-bolts.
  8. Install the leaf spring anchor plate.

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

  9. Install the leaf spring U-bolt nuts.
    10. • Tighten the leaf spring U-bolt mounting nuts to 85 N·m (63 lb ft) (All 1500 Series).
    • Tighten the leaf spring U-bolt mounting nuts to 140 N·m (103 lb ft) plus 180 degrees.
  10. Tighten the front hanger bracket and spring shackle mounting nuts.
    11. • Tighten the front hanger bracket mounting nut to 100 N·m (74 lb ft) plus 210 degrees.
    • Tighten the leaf spring to front hanger mounting nut to 300 N·m (211 lb ft) plus 140 degrees (W/14200 GVW).
    • Tighten the spring shackle to frame mounting nut to 115 N·m (85 lb ft).
    • Tighten the spring shackle to leaf spring mounting nut to 85 N·m (63 lb ft).
  11. Remove the rear axle support.
  12. Lower the vehicle.