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

Removal 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.
  1. Without disconnecting the hoses, remove and position aside the radiator surge tank. - Radiator Surge Tank Replacement (LGX with V08)Radiator Surge Tank Replacement (LCV)
  2. Remove and properly dispose of the brake fluid in the master cylinder reservoir.
  3. Disconnect Brake Fluid Level Indicator Switch Electrical Connector
  4. Fig 1: Brake Pressure Modulator Valve Master Cylinder Reservoir Front Brake Pipe Fitting
    GM4285116Courtesy of GENERAL MOTORS COMPANY
  5. Disconnect Brake Pressure Modulator Valve Master Cylinder Reservoir Front Brake Pipe Fitting (1)
  6. Cap the brake pipe fitting to prevent brake fluid loss and contamination.
  7. Fig 2: Brake Pressure Modulator Valve Master Cylinder Reservoir Rear Brake Pipe Fitting
    GM4285063Courtesy of GENERAL MOTORS COMPANY
  8. Disconnect Brake Pressure Modulator Valve Master Cylinder Reservoir Rear Brake Pipe Fitting (1)
  9. Cap the brake pipe fitting to prevent brake fluid loss and contamination.
  10. Fig 3: Master Cylinder Nut
    GM4285064Courtesy of GENERAL MOTORS COMPANY
  11. Remove Brake Master Cylinder Nut (1) and DISCARD
  12. Fig 4: Brake Master Cylinder Assembly
    GM4285067Courtesy of GENERAL MOTORS COMPANY
  13. Remove Brake Master Cylinder Assembly (1)
  14. Fig 5: Brake Master Cylinder Gasket
    GM4285070Courtesy of GENERAL MOTORS COMPANY
  15. Remove Brake Master Cylinder Gasket (1) and DISCARD
  16. Remove Brake Master Cylinder Reservoir - Master Cylinder Reservoir Replacement