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Home >> Chevrolet >> 2020 >> Impala Premier >> Repair and Diagnosis >> Brakes >> Mechanical - Hydraulic >> Hydraulic Brakes >> Repair Instructions >> Power Vacuum Brake Booster Replacement >> Removal Procedure

Removal Procedure

  1. With the engine OFF, apply and release the brake pedal several times until the pedal becomes firm to deplete the power vacuum brake booster vacuum reserve.
  2. Without draining the coolant and without disconnecting the hoses, remove and position aside the radiator surge tank. Refer to Radiator Surge Tank Replacement (LFX) .
  3. Disconnect the brake pedal position sensor electrical connector. Refer to Brake Pedal Position Sensor Replacement .
  4. GM2347572

    Release the brake pedal (1) from the power vacuum brake booster pushrod by lifting the pedal upward.

    5. NOTE:

    Do not reuse the brake pedal retainer.

  5. Remove and discard the brake pedal retainer.
  6. Disconnect the power vacuum brake booster vacuum sensor electrical connector.
  7. GM2607855

    Release the power brake booster vacuum inlet pipe from the retainers (1) on the dash panel.

  8. GM2607858

    Remove the power brake booster vacuum sensor (1) from the power vacuum brake booster and position aside.

  9. Disconnect the brake fluid level indicator switch electrical connector.
  10. Remove the electronic brake and traction control module (EBTCM). Refer to Electronic Brake and Traction Control Module with Brake Pressure Modulator Valve Replacement .
  11. GM2280909

    Remove the master cylinder nuts (1).

  12. GM2280910

    Remove the master cylinder (1).

  13. Inspect the master cylinder O-ring seal for damage and replace, if necessary.
  14. GM2280911

    Completely loosen the power vacuum brake booster bolts (1).

  15. GM2280912

    Remove the power vacuum brake booster (1).

  16. Inspect the power vacuum brake booster gasket (2) for damage and replace, if necessary.
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