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HOMESERVICE MANUALSCHEVROLET2003TRAILBLAZER 4.2 S, 4WDREPAIR AND DIAGNOSISEXTERNAL PAGESDIFFERENT CARSECTION 1034 (DISC BRAKE SYSTEM)REPAIR INSTRUCTIONSBRAKE CALIPER BRACKET REPLACEMENT - FRONTINSTALLATION PROCEDURE
2003 Chevrolet TrailBlazer 4.2 S, 4WD

Installation Procedure

2003 Chevrolet TrailBlazer 4.2 S, 4WDSECTION 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.
  1. Install the brake caliper bracket (1).
    2. Fig 1: Brake Caliper Bracket Mounting & Bolts
    GM794150Courtesy of GENERAL MOTORS CORP.
  2. Perform the following procedure before installing the brake caliper bracket mounting bolts.
    1. Remove all traces of the original adhesive patch.
    2. Clean the threads of the bolt with denatured alcohol or equivalent and allow to dry.
    3. Apply Threadlocker GM P/N 12345493 (Canadian P/N 10953488) to the threads of the bolt.
    3. NOTE: Refer to Fastener Notice in Cautions and Notices.
  3. Install the caliper bracket mounting bolts (2).

    Tighten: 

    • Tighten the brake caliper bracket mounting bolts to 175 N.m (121 lb ft) (15 Series).
    • Tighten the brake caliper bracket mounting bolts to 300 N.m (221 lb ft) (25 and 35 Series).

  4. Install the anti-rattle clips to the brake caliper bracket.
  5. Install the brake pads to the brake caliper bracket.
  6. Slide the brake pads in until they contact the rotor.
    7. Fig 2: View Of Disc Brake Pads & Brake Caliper Mounting Bracket
    GM369668Courtesy of GENERAL MOTORS CORP.
  7. Install the brake caliper. Refer to Brake Caliper Replacement - Front .
  8. Install the tire and wheel assembly. Refer to Tire and Wheel Removal and Installation in Tires and Wheels.
  9. Lower the vehicle.
  10. With the engine OFF, gradually apply the brake pedal to approximately 2/3 of it's travel distance.
  11. Slowly release the brake pedal.
  12. Wait 15 seconds, then repeat steps 10-11 until a firm pedal is obtained. This will properly seat the brake caliper pistons and brake pads.
RENDER: 1.0x

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When to See a Mechanic

Stop DIY work and contact a certified mechanic immediately if any of the following apply:

  • • You smell fuel, burning insulation, or see smoke.
  • • Brakes feel soft, pull hard to one side, or make grinding noises.
  • • The engine overheats, stalls repeatedly, or misfires under load.
  • • You are missing required tools, torque specs, or safe lifting equipment.
  • • You are not confident in the next step or safety outcome.