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Home >> GMC >> 2018 >> Acadia Denali, FWD >> Repair and Diagnosis >> External Pages >> Different car >> Section 348 (Hydraulic Brake System) >> Repair Instructions >> Power Brake Booster Replacement >> Installation Procedure

Installation Procedure

WARNING: This page is about a different car, the 2017 GMC Acadia. However, it is still accessible from the selected car via links, so may be relevant.
    Fig 1: Brake Pedal Retainer
    GM4285112Courtesy of GENERAL MOTORS COMPANY
  1. Install NEW Brake Pedal Retainer (1)
  2. Fig 2: Power Brake Booster Seal
    GM4285081Courtesy of GENERAL MOTORS COMPANY
  3. Install Power Brake Booster Seal (1)
  4. Fig 3: Power Brake Booster
    GM4285079Courtesy of GENERAL MOTORS COMPANY
    NOTE:

    Align the power brake booster pushrod with the brake pedal retainer.

  5. Install Power Brake Booster (1)
  6. Fig 4: Power Brake Booster Bolt
    GM4285076Courtesy of GENERAL MOTORS COMPANY
  7. Install Power Brake Booster Bolt (1) and tighten 22 N.m (16 lb ft)
  8. Fig 5: Fuel Injector Wiring Harness Retainer
    GM4419511Courtesy of GENERAL MOTORS COMPANY
  9. Secure Fuel Injector Wiring Harness Retainer (1)
  10. Position the heater coolant pump to the transmission case.
  11. Fig 6: Heater Coolant Pump Stud
    GM4325955Courtesy of GENERAL MOTORS COMPANY
  12. Install {If equipped}Heater Coolant Pump Stud (1) - Heater Coolant Pump Replacement (LCV)
  13. NOTE:

    Ensure the brake master cylinder gasket is positioned correctly against the master cylinder mounting flange.

  14. Position the master cylinder to the power brake booster.
  15. Fig 7: Master Cylinder Nut
    GM4285064Courtesy of GENERAL MOTORS COMPANY
    NOTE:

    Install NEW nuts.

  16. Install Master Cylinder Nut (1) and tighten 49 N.m (36 lb ft)
  17. Connect the brake fluid level indicator switch electrical connector.
  18. Fig 8: Pedal Retainer And Brake Pedal
    GM4285082Courtesy of GENERAL MOTORS COMPANY
  19. Secure Brake Pedal Retainer (1) & Brake Pedal (2) @Power Brake Booster Pushrod
  20. Install Brake Pedal Position Sensor- Brake Pedal Position Sensor Replacement
  21. Fig 9: Power Brake Booster Vacuum Sensor
    GM4285121Courtesy of GENERAL MOTORS COMPANY
    NOTE:

    A small amount of denatured alcohol may be used as a lubricant for assembly.

  22. Install Power Brake Booster Vacuum Sensor (1)
  23. Connect Power Brake Booster Vacuum Sensor Electrical Connector
  24. Reposition and install the radiator surge tank. Radiator Surge Tank Replacement (LGX with V08)Radiator Surge Tank Replacement (LCV)