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Home >> Chevrolet >> 2002 >> Blazer 4D Utility, 4WD, Part Time >> Repair and Diagnosis >> External Pages >> Different car >> Section 1037 (Disc Brake System) >> Repair Instructions >> Brake Rotor Replacement - Rear (Except Dual Wheels or NYS) >> Installation Procedure

Installation Procedure

WARNING: This page is about a different car, the 2004 GMC Sierra, 2004 GMC Cab & Chassis Sierra, 2004 Chevrolet Silverado, and 2004 Chevrolet Cab & Chassis Silverado. However, it is still accessible from the selected car via links, so may be relevant.
    IMPORTANT: Whenever the brake rotor has been separated from the hub/axle flange, any rust or contaminants should be cleaned from the hub/axle flange and the brake rotor mating surfaces. Failure to do this may result in excessive assembled lateral runout (LRO) of the brake rotor, which could lead to brake pulsation.
  1. Use the J 42450-A  to clean all rust and contaminants from the mating surface of the hub flange.
  2. Use the J 41013  to clean all rust and contaminants from the inside diameter of the hat section of the brake rotor to prevent any foreign material from getting between the brake rotor and the hub flange.
  3. Inspect the mating surfaces of the hub/axle flange and the rotor to ensure that there are no foreign particles or debris remaining.
  4. Align the rotor to its original position on the hub, if applicable, and install the rotor.
  5. If the brake rotor was removed and installed as part of a brake system repair, measure the assembled lateral runout (LRO) of the brake rotor to ensure optimum performance of the disc brakes. Refer to Brake Rotor Assembled Lateral Runout (LRO) Measurement .
  6. If the brake rotor assembled LRO measurement exceeds the specification, bring the LRO to within specifications. Refer to Brake Rotor Assembled Lateral Runout (LRO) Correction .
  7. Install the rotor by slowly turning the rotor while pushing the rotor towards the axle.
    8. Fig 1: Installing Rear Brake Rotor (Except Dual Wheels or NYS)
    GM686151Courtesy of GENERAL MOTORS CORP.
  8. Install the caliper and the bracket as an assembly to the vehicle.
    9. Fig 2: View Of Brake Caliper & Brake Caliper Bracket
    GM924321Courtesy of GENERAL MOTORS CORP.
  9. Perform the following procedure before installing the caliper bracket mounting bolts.
    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.
    10. NOTE: Refer to Fastener Notice in Cautions and Notices.
  10. Install the caliper bracket mounting bolts.

    Tighten: 

    • For the 15 series, tighten the brake caliper bracket mounting bolts to 200 N.m (148 lb ft).
    • For the 25/35 series, tighten the brake caliper bracket mounting bolts to 165 N.m (122 lb ft).

  11. Install the tire and wheel assembly. Refer to Tire and Wheel Removal and Installation in Tires and Wheels.
  12. Lower the vehicle.
  13. With the engine OFF, gradually apply the brake pedal to approximately 2/3 of it's travel distance.
  14. Slowly release the brake pedal.
  15. Wait 15 seconds, then repeat steps 13-14 until a firm pedal is obtained. This will properly seat the brake caliper pistons and brake pads.
  16. Fill the master cylinder reservoir to the proper level with clean brake fluid. Refer to Master Cylinder Reservoir Filling in Hydraulic Brakes.
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