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Home >> Cadillac >> 2013 >> Escalade Hybrid, RWD >> Repair and Diagnosis >> Brakes >> Mechanical - Hydraulic >> Hydraulic Brake System >> Repair Instructions >> Power Vacuum Brake Booster Replacement >> Removal Procedure

Removal Procedure

  1. Place the ignition switch in the OFF position.
  2. Apply and release the brake pedal several times until the brake pedal becomes firm to deplete the power vacuum brake booster vacuum reserve.
    3. Fig 1: Power Brake Booster Vacuum Sensor
    GM2277629Courtesy of GENERAL MOTORS COMPANY
  3. Disconnect the electrical connector and remove the power brake booster vacuum sensor (1) and vacuum hose and position aside.
    4. Fig 2: Brake Master Cylinder Nuts
    GM2277632Courtesy of GENERAL MOTORS COMPANY
  4. Remove the brake master cylinder nuts (1).
  5. Without disconnecting the brake pipe fittings from the master cylinder, remove the brake master cylinder and support with heavy mechanics wire or equivalent.
  6. Inspect the O-ring seal on the master cylinder body for damage and replace, if necessary.
    7. Fig 3: Brake Booster Pushrod Retainer Bolt
    GM1892248Courtesy of GENERAL MOTORS COMPANY
  7. Remove the brake booster pushrod retainer bolt (1).
    8. Fig 4: Brake Booster Pushrod Retainer
    GM1892250Courtesy of GENERAL MOTORS COMPANY
  8. Remove the brake booster pushrod retainer (1).
    9. Fig 5: Stoplamp (Brake Light) Switch
    GM1892252Courtesy of GENERAL MOTORS COMPANY
  9. Disconnect the electrical connector and remove the stoplamp switch (1).
  10. Disconnect the brake booster pushrod from the brake pedal pin.
    11. Fig 6: Brake Booster Nuts
    GM1892257Courtesy of GENERAL MOTORS COMPANY
  11. Remove the power vacuum brake booster nuts (1).
  12. Remove the power vacuum brake booster.
  13. Remove and discard the power vacuum brake booster gasket.
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