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Home >> Cadillac >> 2019 >> ATS Premium Performance >> Repair and Diagnosis >> Brakes >> Mechanical - Hydraulic >> Hydraulic Brakes >> Repair Instructions >> Power Brake Booster Vacuum Check Valve and Hose Replacement (LF4) >> Removal Procedure

Removal Procedure

  1. Apply the brake pedal several times until the pedal becomes firm to deplete the power vacuum brake booster vacuum reserve.
  2. Front End Sheet Metal Diagonal Brace Replacement - Left Side (ATS-V) - Remove
  3. Charge Air Bypass Valve Replacement - Left Side - Remove
  4. Charge Air Cooler Inlet Pipe Replacement - Left Side - Remove
  5. Disconnect the power brake booster vacuum sensor electrical connector.
  6. GM4014488Courtesy of GENERAL MOTORS COMPANY
    NOTE:

    The charge air cooler inlet air hose not shown for clarity.

    Power Brake Booster Vacuum Sensor (1) - Remove

  7. GM4014765Courtesy of GENERAL MOTORS COMPANY

    Power Brake Booster Vacuum Hose Quick Connect (1) @ Intake Manifold - Disconnect

  8. GM4015324Courtesy of GENERAL MOTORS COMPANY

    Retainer and Clip (1) - Release

  9. Air Cleaner Outlet Front Duct Replacement (LF4) - Remove
  10. GM4015327Courtesy of GENERAL MOTORS COMPANY

    Retainer and Clip (1) - Release

  11. GM4015331Courtesy of GENERAL MOTORS COMPANY

    Power Brake Booster Vacuum Hose Quick Connect (1) @ Vacuum Pump - Disconnect

  12. Vacuum Hose (2) @ Engine Mount - Disconnect
  13. Power Brake Booster Vacuum Hose Assembly - Remove
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