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Home >> Cadillac >> 2021 >> CT5 V, RWD >> Repair and Diagnosis >> Brakes >> Mechanical - Hydraulic >> Hydraulic Brakes >> Repair Instructions >> Brake Master Cylinder Replacement - With Power Brake Booster and Electronic Brake Control Module >> Removal Procedure

Removal Procedure

  1. Prepare the electronic brake control module for removal with Service Programming System (SPS) and follow the on-screen instructions.
  2. Disconnect the battery negative cable. Battery Negative Cable Disconnection and Connection
  3. Plenum Front Panel - Remove - Plenum Front Panel Replacement
  4. Disconnect the brake fluid level sensor connector.
  5. GM5324655Courtesy of GENERAL MOTORS COMPANY

    Disconnect the electrical connector: (1)

  6. Instrument Panel Lower Trim Panel Insulator - Remove - Instrument Panel Lower Trim Panel Insulator Replacement - Left Side
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    Compress the brake pedal retainer (1) locking tabs.

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    NOTE:

    Pull the brake pedal rearward to disconnect the retainer.

    Brake Pedal (1) - Disconnect

  9. GM4234245Courtesy of GENERAL MOTORS COMPANY

    Brake Pedal Retainer (1) - Remove and DISCARD

  10. GM5324657Courtesy of GENERAL MOTORS COMPANY
    NOTE:

    Label the brake pipes to ensure they are re-installed in the correct ports of the brake master cylinder.

  11. Brake Master Cylinder Nut (1) - Disconnect [ 4x ] - Brake Pressure Modulator Valve Pipe Replacement 
  12. Plug the brake master cylinder ports and the brake pipes to stop fluid loss and contamination.
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    Brake Master Cylinder Nut (1) - Remove [ 2x ]

  14. GM5324650Courtesy of GENERAL MOTORS COMPANY

    Brake Master Cylinder (1) - Remove

  15. Transfer components as necessary.