GM Service Manual Online
For 1990-2009 cars only
Makes 🢒 Cadillac 🢒 2004 🢒 Seville 🢒 Brakes 🢒 Hydraulic Brakes 🢒 Power Vacuum Brake Booster Replacement

Removal Procedure
  1. Place the vehicle on a level surface.
  2. Block the front wheels.
  3. Apply the parking brake.
  4. Set the parking brake.
  5. Remove the surge tank mounting screw and nuts. Refer to Radiator Surge Tank Replacement in Engine Cooling.
  6. Position the surge tank out of the way.
  7. Remove the vacuum booster check valve from the vacuum booster .

    8. Object Number: 288094 Size: SH
  8. Remove the master cylinder. Refer to Master Cylinder Replacement .
  9. Disconnect the inlet heater pipe and position out of the way. Refer to Heater Inlet Pipe Replacement in Heating, Ventilation and Air Conditioning.
  10. Remove the left closeout/insulator panel. Refer to Instrument Panel Insulator Panel Replacement - Left Side in Instrument Panel, Gages, and Console.
  11. Remove the left knee bolster. Refer to Knee Bolster Replacement in Instrument Panel, Gages, and Console.

    12. Object Number: 287894 Size: SH
  12. Slightly depress the steering shaft protective boot to access the left lower booster attaching nut. Remove the booster attaching nuts (2, 3) from the brake pedal assembly.

    13. Object Number: 569134 Size: SH
  13. Remove the retaining clip (2) from the brake pedal clevis pin.
  14. Remove the washer (1) from the brake pedal clevis pin.
  15. Remove the vacuum booster pushrod from the brake pedal clevis pin.

    16. Object Number: 106322 Size: SH
  16. Remove the booster from the vehicle.
  17. Remove the brake booster mounting gasket, if gasket replacement is necessary.

Installation Procedure
  1. Install the brake booster mounting gasket to the booster, if removed previously.

    2. Object Number: 106322 Size: SH
  2. Install the vacuum brake booster to the vehicle.

    3. Object Number: 287901 Size: SH
  3. Install the vacuum brake booster pushrod to the brake pedal clevis pin.
  4. Install the vacuum brake booster pushrod form spacer (1) to the brake pedal clevis pin.
  5. Install the vacuum brake booster pushrod retaining clip (2) to the brake pedal clevis pin.

    6. Object Number: 287894 Size: SH

    Notice: Use the correct fastener in the correct location. Replacement fasteners must be the correct part number for that application. Fasteners requiring replacement or fasteners requiring the use of thread locking compound or sealant are identified in the service procedure. Do not use paints, lubricants, or corrosion inhibitors on fasteners or fastener joint surfaces unless specified. These coatings affect fastener torque and joint clamping force and may damage the fastener. Use the correct tightening sequence and specifications when installing fasteners in order to avoid damage to parts and systems.

  6. Install the vacuum brake booster attaching nuts (2, 3) to the vacuum brake booster studs.

    7. Tighten
    Tighten the brake pedal to booster stud nuts to 23 N·m (17 lb ft).

  7. Install the left knee bolster. Refer to Knee Bolster Replacement in Instrument Panel, Gages, and Console.
  8. Install the left closeout/insulator panel. Refer to Instrument Panel Insulator Panel Replacement - Left Side in Instrument Panel, Gages, and Console.
  9. Connect the inlet heater pipe. Refer to Heater Inlet Pipe Replacement in Heating, Ventilation and Air Conditioning.
  10. Install the master cylinder onto the booster. Refer to Master Cylinder Replacement .
  11. Install the vacuum booster check valve to the vacuum brake booster.
  12. Install the surge tank. Refer to Radiator Surge Tank Replacement in Engine Cooling.
  13. Remove the blocks from the front wheels.
  14. Release the park brake.