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Home >> Cadillac >> 2020 >> CT6 V >> Repair and Diagnosis >> Brakes >> Mechanical - Hydraulic >> Hydraulic Brakes >> Repair Instructions >> Brake Master Cylinder Replacement - With Power Brake Booster and Electronic Brake Control Module (LTA) >> Removal Procedure

Removal Procedure

  1. Disconnect the battery negative cable. Battery Negative Cable Disconnection and Connection
  2. Instrument Panel Lower Trim Panel Insulator - Remove - Instrument Panel Lower Trim Panel Insulator Replacement - Left Side
  3. Brake Pedal Position Sensor - Remove - Brake Pedal Position Sensor Replacement
    GM5095809Courtesy of GENERAL MOTORS COMPANY
  4. Disconnect the brake master cylinder from the push rod retainer (1) by pulling the brake pedal (2) outwards.
    GM4247112Courtesy of GENERAL MOTORS COMPANY
  5. Windshield Wiper Transmission (2) - Remove - Windshield Wiper Transmission Replacement
  6. Remove and properly dispose of the brake fluid in the master cylinder reservoir.
    GM5095973Courtesy of GENERAL MOTORS COMPANY
    NOTE:

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

  7. Front and Rear Brake Pipe Fitting (1) - Disconnect [4x]
  8. Cap the brake pipe fittings to prevent brake fluid loss and contamination.
  9. Disconnect the electrical connector.
    GM5095800Courtesy of GENERAL MOTORS COMPANY
  10. Brake Master Cylinder Nut (1) - remove [2x]
  11. Brake Pressure Modulator Valve Bolt (2) - Remove
    GM5095820Courtesy of GENERAL MOTORS COMPANY
  12. Brake Master Cylinder (1) - Remove
  13. Remove and DISCARD push rod retainer.
    GM5106445Courtesy of GENERAL MOTORS COMPANY
  14. Brake Master Cylinder Bracket Bolt (2) - remove [2x]
  15. Brake Master Cylinder Bracket (1) - Remove and DISCARD
  16. Transfer components as necessary.