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HOMESERVICE MANUALSCHEVROLET2003TRAILBLAZER 4.2 S, 4WDREPAIR AND DIAGNOSISEXTERNAL PAGESDIFFERENT CARSECTION 939 (ANTI-LOCK BRAKE SYSTEM)REPAIR INSTRUCTIONSBRAKE PRESSURE MODULATOR VALVE (BPMV) REPLACEMENTINSTALLATION 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 2002 Oldsmobile Bravada, 2002 GMC Envoy XL, 2002 GMC Envoy, and 2002 Chevrolet TrailBlazer. However, it is still accessible from the selected car via links, so may be relevant.
  1. Install the brake pipe to the brake master cylinder.
    NOTE: Use the correct fastener in the correct location. Replacement fasteners must be the correct part number for that application. Fasteners requiring replacement or fasteners requiring the use of thread locking compound or sealant are identified in the service procedure. Do not use paints, lubricants, or corrosion inhibitors on fasteners or fastener joint surfaces unless specified. These coatings affect fastener torque and joint clamping force and may damage the fastener. Use the correct tightening sequence and specifications when installing fasteners in order to avoid damage to parts and systems.

    Tighten 

    Tighten the brake pipe fitting 24 N.m (18 lb in).

    2. Fig 1: Installing Brake Pipe To Brake Master Cylinder
    G01706160Courtesy of GENERAL MOTORS CORP.
  2. Install the rear brake pipe.

    Tighten 

    Tighten the brake pipe fitting 24 N.m (18 lb in).

    3. Fig 2: Installing Rear Brake Pipe
    G01706161Courtesy of GENERAL MOTORS CORP.
  3. Install the right front brake pipe.

    Tighten 

    Tighten the brake pipe fitting 24 N.m (18 lb in).

    4. Fig 3: Installing Right Front Brake Pipe
    G01706162Courtesy of GENERAL MOTORS CORP.
  4. Install the left front brake pipe.

    Tighten 

    Tighten the brake pipe fitting 24 N.m (18 lb in).

    5. Fig 4: Installing Left Front Brake Pipe
    G01706163Courtesy of GENERAL MOTORS CORP.
  5. Install the EBCM to the vehicle. Refer to Electronic Brake Control Module (EBCM) Replacement .
  6. Lower the vehicle. Refer to Lifting and Jacking the Vehicle in General Information.
  7. Bleed the brake system. Refer to ABS Automated Bleed Procedure .
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.