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Home >> GMC >> 2022 >> Hummer EV >> Repair and Diagnosis >> Brakes >> Mechanical - Hydraulic >> Hydraulic Brakes >> Repair Instructions >> Brake Master Cylinder Reservoir Replacement >> Removal Procedure

Removal Procedure

  1. Disconnect the battery negative cable. Battery Negative Cable Disconnection and Connection
  2. GM5787985Courtesy of GENERAL MOTORS COMPANY

    Turn the 3 front compartment sight shield retainers (1) a quarter turn counter clockwise to release.

  3. GM5787987Courtesy of GENERAL MOTORS COMPANY

    Front Compartment Side Sight Shield (1) - Remove

  4. Thoroughly clean the brake master cylinder reservoir and the brake master cylinder body to remove any dirt and debris.
  5. Electrical Connector @ Brake Fluid Level Indicator Switch - Disconnect
  6. Place a drain pan under the vehicle.
  7. GM5835315Courtesy of GENERAL MOTORS COMPANY

    Brake Master Cylinder Bolt (1) - Remove [2x]

  8. GM5835316Courtesy of GENERAL MOTORS COMPANY

    Brake Master Cylinder Reservoir (1) - Remove

  9. Brake Master Cylinder Reservoir Seal (2) - Remove and DISCARD [3x]
  10. Clean any brake fluid from the underbody area and remove the drain pan from under the vehicle.