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Home >> Buick >> 2015 >> Regal GS, AWD >> Repair and Diagnosis >> Brakes >> Mechanical - Hydraulic >> Hydraulic Brake System >> Repair Instructions >> Power Vacuum Brake Booster Replacement >> Installation Procedure

Installation Procedure

    Fig 1: Power Vacuum Brake Booster
    GM2280912Courtesy of GENERAL MOTORS COMPANY
  1. Install the power vacuum brake booster (1) and gasket (2) .
    2. Fig 2: Power Vacuum Brake Booster Bolts
    GM2280911Courtesy of GENERAL MOTORS COMPANY
    CAUTION:

    Refer to Fastener Caution .

    NOTE:

    Do not over tighten the power vacuum brake booster bolts. If the power vacuum brake booster bolts are over tightened, the brake pedal may remain applied after a high pressure brake pedal application.

  2. Install the power vacuum brake booster bolts (1) and tighten to 19 N.m (14 lb ft) .
    3. Fig 3: Master Cylinder
    GM2280910Courtesy of GENERAL MOTORS COMPANY
  3. Install the master cylinder (1) to the power vacuum brake booster.
    4. Fig 4: Master Cylinder Nuts
    GM2280909Courtesy of GENERAL MOTORS COMPANY
  4. Install the master cylinder nuts (1) and tighten to 50 N.m (37 lb ft) .
  5. Connect the brake fluid level indicator switch electrical connector.
  6. Install the EBTCM. Refer to Electronic Brake and Traction Control Module with Brake Pressure Modulator Valve Replacement .
    7. Fig 5: Power Brake Booster Vacuum Sensor
    GM2607858Courtesy of GENERAL MOTORS COMPANY
    NOTE:

    A small amount of denatured alcohol may be used as a lubricant to assist the installation of the power brake booster vacuum sensor.

  7. Install the power brake booster vacuum sensor (1) to the power vacuum brake booster.
    8. Fig 6: Power Brake Booster Vacuum Rear Pipe
    GM2607855Courtesy of GENERAL MOTORS COMPANY
  8. Install the power brake booster vacuum inlet pipe to the retainers (1) on the dash panel.
  9. Connect the power vacuum brake booster vacuum sensor electrical connector.
    10. Fig 7: Brake Pedal
    GM2347572Courtesy of GENERAL MOTORS COMPANY
    NOTE:

    Install a new power vacuum brake booster pushrod retainer.

  10. Install a new power vacuum brake booster pushrod retainer to the power vacuum brake booster pushrod.
    11. NOTE:

    Ensure the power vacuum brake booster pushrod retainer is fully seated in the brake pedal arm.

  11. Connect the power vacuum brake booster pushrod retainer (1) to the brake pedal.
  12. Connect the brake pedal position sensor electrical connector. Refer to Brake Pedal Position Sensor Replacement .
  13. Install the radiator surge tank. Refer to Radiator Surge Tank Replacement (LEA, LUK) .
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