Rear Suspension Leaf Spring
Leaf Spring Replacement
Removal Procedure
1. Raise and support the vehicle. Refer to Lifting and Jacking the Vehicle (Service and Repair)
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. Remove the leaf spring (1) to the spring shackle (5) mounting bolt and nut (3).
8. Remove the leaf spring to the front hanger bracket mounting nut and bolt.
9. Remove the leaf spring from the vehicle.
Installation Procedure
1. Install the leaf spring to the vehicle.
2. Perform the following procedure before installing the front hanger bracket mounting bolt.
1. Remove all traces of the original adhesive patch.
2. Clean the threads of the bolt with brake parts cleaner or the equivalent and allow to dry.
3. Apply Threadlocker GM P/N 12345493 (Canadian P/N 10953488) to the threads of the bolt.
3. Loosely install the leaf spring to the front hanger bracket mounting bolt and nut.
4. Install the leaf spring (1) to the spring shackle (5) mounting bolt and nut (3).
Note: Do not reuse the leaf spring U-bolts.
5. Install the leaf spring spacer.
6. Install the leaf spring U-bolts.
7. Install the leaf spring anchor plate.
Caution: Refer to Fastener Caution (Fastener Caution)
8. Install the leaf spring U-bolt nuts.
* Tighten the leaf spring U-bolt mounting nuts to 85 Nm (63 lb ft) (All 1500 Series).
* Tighten the leaf spring U-bolt mounting nuts to 140 Nm (103 lb ft).
9. Tighten the front hanger bracket and spring shackle mounting nuts.
* Tighten the front hanger bracket mounting nut to 100 Nm (74 lb ft) plus 210 degrees.
* Tighten the leaf spring to front hanger mounting nut to 375 Nm (277 lb ft) (W/14200 GVW).
* Tighten the spring shackle to frame mounting nut to 115 Nm (85 lb ft).
* Tighten the spring shackle to leaf spring mounting nut to 85 Nm (63 lb ft).
10. Remove the rear axle support.
11. Lower the vehicle.