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Home >> Chevrolet >> 2021 >> Trailblazer ACTIV, FWD >> Repair and Diagnosis >> Brakes >> Mechanical - Hydraulic >> Hydraulic Brakes >> Repair Instructions >> Brake Master Cylinder Reservoir Replacement (Attached) >> 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. Drain and properly dispose of the brake fluid in the master cylinder reservoir.
  2. Disconnect the battery negative cable. Battery Negative Cable Disconnection and Connection
  3. GM5225111Courtesy of GENERAL MOTORS COMPANY

    Brake Master Cylinder Reservoir - Upper (2) - Remove - Brake Master Cylinder Reservoir Replacement (Attached) 

  4. GM5225113Courtesy of GENERAL MOTORS COMPANY

    Brake Master Cylinder Reservoir Bolt (1) - Remove

  5. GM5225114Courtesy of GENERAL MOTORS COMPANY

    Remove the attached brake master cylinder reservoir (1) by lifting the front up and disengaging the rear clip.

  6. GM5225116Courtesy of GENERAL MOTORS COMPANY

    Brake Master Cylinder Reservoir Grommet (1) - Remove and DISCARD [3x]

  7. GM5286275Courtesy of GENERAL MOTORS COMPANY

    Note the location of the filter element for proper installation.

  8. Transfer components as necessary.