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Home >> GMC >> 2002 >> Sierra 1500 HD, RWD >> Repair and Diagnosis >> Brakes >> Mechanical - Hydraulic >> Hydraulic Brakes >> Repair Instructions >> Master Cylinder Replacement (Vacuum Boost) >> Removal Procedure

Removal Procedure

  1. Apply the park brake and block the wheels.
  2. Disconnect the electrical connector from the brake fluid level sensor.
  3. Disconnect the brake pipes from the master cylinder.

    Important:  Install a rubber cap or plug to the exposed brake pipe fitting ends in order to prevent brake fluid loss and contamination.

  4. Plug the open brake pipe ends.
    Fig 1: Disconnecting Brake Pipes From Master Cylinder
    G01669026Courtesy of GENERAL MOTORS CORP.
  5. Remove the master cylinder mounting nuts.
  6. Remove the master cylinder from the vehicle.
  7. Remove the master cylinder reservoir. Refer to Master Cylinder Reservoir Replacement .
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