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Home >> GMC >> 2018 >> Acadia Denali, FWD >> Repair and Diagnosis >> External Pages >> Different car >> Section 250 (Hydraulic Brake System) >> Repair Instructions >> Power Brake Booster Pump Replacement >> Removal Procedure

Removal Procedure

WARNING: This page is about a different car, the 2017 Cadillac ATS. However, it is still accessible from the selected car via links, so may be relevant.
  1. Apply the brake pedal several times until the pedal becomes firm to deplete the power vacuum brake booster vacuum reserve.
  2. Remove Intake Manifold Cover. Refer to Intake Manifold Cover Replacement (LF4)Intake Manifold Cover Replacement (LGX)
  3. Remove Air Cleaner Outlet Front Duct (LF4). Refer to Air Cleaner Outlet Front Duct Replacement (LF4)
  4. Disconnect the power brake booster pump electrical connector.
  5. Fig 1: Power Brake Booster Vacuum Hose Quick Connect
    GM4015331Courtesy of GENERAL MOTORS COMPANY
  6. Disconnect Power Brake Booster Vacuum Hose Quick Connect (1) @ Vacuum Pump
  7. Disconnect Vacuum Hose (2) @ Engine Mount
  8. Position aside the power brake booster vacuum hose assembly.
  9. Fig 2: Power Brake Booster Pump M6 Bolt
    GM4015342Courtesy of GENERAL MOTORS COMPANY
    NOTE:

    Radiator hose not shown for clarity.

  10. Remove Power Brake Booster Pump M6 Bolt (1)
  11. Fig 3: Power Brake Booster Pump M12 Bolt
    GM4015420Courtesy of GENERAL MOTORS COMPANY
  12. Remove Power Brake Booster Pump M12 Bolt (1)
  13. Remove Power Brake Booster Pump
  14. Fig 4: Power Brake Booster Pump Bolts And Nuts
    GM4015426Courtesy of GENERAL MOTORS COMPANY
  15. Remove Power Brake Booster Pump Bolts (1) (Qty: 2)
  16. Remove Power Brake Booster Pump Nuts (2) (Qty: 2)
  17. Fig 5: Power Brake Booster Pump Bracket
    GM4015506Courtesy of GENERAL MOTORS COMPANY
  18. Remove Power Brake Booster Pump Bracket (1)
  19. Fig 6: Power Brake Booster Pump Spacers
    GM4015664Courtesy of GENERAL MOTORS COMPANY
  20. Remove Power Brake Booster Pump Spacers (1) (Qty: 2)
  21. Fig 7: Power Brake Booster Pump Insulators
    GM4015742Courtesy of GENERAL MOTORS COMPANY
  22. Remove Power Brake Booster Pump Insulators (1) (Qty: 2)