Installation Procedure
- Install the backing plate and the wheel cylinder to the axle. Refer to Drum Brake Backing Plate Replacement .
- Install the right axle bracket to the axle.
- Loosely install the right axle-to-bracket nut and bolt to the right axle bracket.
- Raise and support the rear axle.
- Loosely install the left axle-to-bracket nut and bolt to the left axle bracket.
- Apply blue medium strength threadlocker, GM P/N 12345382, or equivalent, to the right axle mounting bracket bolts.
- Install the right axle mounting bracket bolts to the underbody.
Tighten: Tighten the axle mounting bracket bolts to 70 N.m (52 lb ft).
- Install the rear springs and insulators. Refer to Coil Spring Replacement .
- Install the shock absorbers to the axle with the lower attachment bolts. Refer to Shock Absorber Replacement .
- Install the brake hoses to the brackets on the rear axle.
- Install the retaining clips to the brake hoses.
- Install the brake pipes to the brake hoses.
- Install the park brake cable to the rear axle. Refer to Park Brake Cable Replacement .
- Install the brake shoes. Refer to Brake Shoe Replacement .
- Connect the wheel speed sensor connector, if equipped.
- Bleed the brake system and inspect for leaks. Refer to Hydraulic Brake System Bleeding (Manual) .
- If necessary, adjust the park brake. Refer to Park Brake Adjustment .
- Lower the vehicle slightly and install the rear tire and wheel assemblies. Refer to Tire and Wheel Removal and Installation .
- Lower the vehicle.
- Raise the vehicle on an alignment rack. Refer to Lifting and Jacking the Vehicle .
- With the weight of the vehicle on the tires, tighten the lower shock absorber-to-axle bolts.
Tighten: Tighten the lower shock absorber-to-axle bolts to 72 N.m (53 lb ft).
- Tighten the axle-to-bracket nuts and bolts.
Tighten: Tighten the axle-to-bracket nuts and bolts to 115 N.m (85 lb ft).
- Lower the vehicle.
NOTE:
Refer to Fastener Notice
.