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Home >> Buick >> 2020 >> Regal GS >> Repair and Diagnosis >> Brakes >> Mechanical - Hydraulic >> Hydraulic Brakes >> Repair Instructions >> Power Brake Booster Replacement >> Removal Procedure

Removal Procedure

  1. Without draining the coolant and without disconnecting the hoses, remove and position aside the radiator surge tank. Radiator Surge Tank Replacement
  2. GM4420258Courtesy of GENERAL MOTORS COMPANY

    Power Brake Booster Vacuum Pipe (1) @ Power Brake Booster Vacuum Sensor - Disconnect

  3. Power Brake Booster Vacuum Sensor Electrical Connector - Disconnect
  4. GM4420352Courtesy of GENERAL MOTORS COMPANY

    Power Brake Booster Vacuum Sensor (1) - Remove

  5. GM4213869Courtesy of GENERAL MOTORS COMPANY

    Brake Pressure Modulator Valve Primary Pipe (1) - Remove - Brake Pressure Modulator Valve Primary Pipe Replacement (LTG) , or Brake Pressure Modulator Valve Primary Pipe Replacement (LGX) 

  6. GM4213865Courtesy of GENERAL MOTORS COMPANY

    Brake Pressure Modulator Valve Secondary Pipe (1) - Remove - Brake Pressure Modulator Valve Secondary Pipe Replacement (LTG) , or Brake Pressure Modulator Valve Secondary Pipe Replacement (LGX) 

  7. GM4234608Courtesy of GENERAL MOTORS COMPANY

    Brake Master Cylinder - Remove - Brake Master Cylinder Replacement 

  8. GM4851357Courtesy of GENERAL MOTORS COMPANY

    Electronic Traction Control Brake Pressure Modulator Valve (1) - Remove - Electronic Brake and Traction Control Module with Brake Pressure Modulator Valve Replacement , or Electronic Brake and Traction Control Module with Brake Pressure Modulator Valve Replacement (LGX)

  9. GM4239846Courtesy of GENERAL MOTORS COMPANY
    NOTE:

    Completely loosen the power brake booster bolts.

    Power Brake Booster Bolt (1) - Loosen [2x]

  10. NOTE:

    Assistant required.

  11. Perform the following to release the brake pedal retainer
    1. GM4234203Courtesy of GENERAL MOTORS COMPANY

      Compress the brake pedal retainer (1) locking tabs.

    2. Slowly have an assistant pull the power brake booster away from the cowl panel until the brake pedal retainer clears the brake pedal assembly.
    3. GM4234245Courtesy of GENERAL MOTORS COMPANY

      Brake Pedal Retainer (1) - Remove and DISCARD

  12. GM4239848Courtesy of GENERAL MOTORS COMPANY

    Power Brake Booster (1) - Remove