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Home >> Chevrolet >> 2021 >> Trailblazer ACTIV, FWD >> Repair and Diagnosis >> Brakes >> Mechanical - Hydraulic >> Hydraulic Brakes >> Repair Instructions >> Brake Pressure Modulator Valve Front Brake Pipe Replacement (Right Side) >> Removal Procedure

Removal Procedure

WARNING:

The battery must be disconnected to prevent the brake master cylinder from pressurizing the hydraulic system during its automated self diagnostic tests that can possibly occur when a door is opened or the key transmitter is activated. Failure to follow this precaution may cause personal injury.

  1. Disconnect the battery negative cable. Battery Negative Cable Disconnection and Connection
  2. Dash Panel Outer Insulator - Remove - Dash Panel Outer Insulator Replacement
  3. Battery Tray - Remove - Battery Tray Replacement
  4. Raise and support the vehicle. Lifting and Jacking the Vehicle .
  5. Remove the front tire and wheel assembly. Tire and Wheel Removal and Installation
  6. GM5225134Courtesy of GENERAL MOTORS COMPANY

    Brake Pressure Modulator Valve Front Brake Pipe Fitting (1) @ Brake Pressure Modulator Valve - Remove

  7. Plug the brake pressure modulator valve port to prevent brake fluid loss and contamination.
  8. Cap the brake pipe fitting to prevent brake fluid loss and contamination.
  9. GM5225137Courtesy of GENERAL MOTORS COMPANY

    Brake Pressure Modulator Valve Front Brake Pipe Fitting (1) @ Front Brake Hose (3) - Remove

  10. Cap the brake pipe fitting to prevent brake fluid loss and contamination.
  11. Front Brake Hose Retainer (2) - Remove
  12. GM5225138Courtesy of GENERAL MOTORS COMPANY

    Brake Pressure Modulator Valve Front Brake Pipe Clip (1) - Release

  13. GM5225139Courtesy of GENERAL MOTORS COMPANY

    Brake Pressure Modulator Valve Front Brake Pipe Clip (1) - Release [2x]

  14. Brake Pressure Modulator Valve Front Brake Pipe (2) @ Vehicle - Remove