GM Service Manual Online
For 1990-2009 cars only
Makes 🢒 Cadillac 🢒 2002 🢒 Eldorado 🢒 Brakes 🢒 Hydraulic Brakes 🢒 Power Vacuum Brake Booster Replacement

Removal Procedure
  1. Place the vehicle on a flat surface.
  2. Chock the wheels to prevent the vehicle from moving.
  3. Set the parking brake.
  4. To allow access for the removal of the vacuum brake booster, position the gearshift lever into the lowest gear.
  5. Remove the cross vehicle brace. Refer to Cross Vehicle Brace Replacement in Body Front End.
  6. Remove the cruise control module and position out of the way. Refer to Cruise Control Module Replacement in Cruise control.
  7. Remove the air cleaner assembly. Refer to Air Cleaner Assembly Replacement in Engine Controls - 4.6L.
  8. Disconnect the accelerator cable and position out of the way. Refer to Accelerator Control Cable Replacement in Engine Controls - 4.6L.

    9. Object Number: 153743 Size: SH
  9. Remove the master cylinder from the vacuum brake booster and position out of the way. Refer to Master Cylinder Replacement .
  10. Disconnect the vacuum check valve (1) from the vacuum brake booster (2) and position out of the way.
  11. Disconnect the shift control cable from the shaft lever pin and position out of the way. Refer to Range Selector Lever Cable Replacement in Axle Transaxle 4T80E.
  12. Disconnect the secondary air injection pipe. Refer to Secondary Air Injection Shutoff Valve Replacement - Bank 1 in Engine Controls - 4.6L.
  13. Remove the left closeout insulator panel. Refer to Instrument Panel Insulator Panel Replacement - Left Side in Instrument Panel, Gages, and Console.
  14. Remove the left knee bolster. Refer to Driver Knee Bolster Panel Replacement in Instrument Panel, Gages, and Console.

    15. Object Number: 569134 Size: SH
  15. Remove the vacuum brake booster retainer (2 ) from the brake pedal clevis pin.
  16. Remove the foam spacer (1) from the brake pedal clevis pin.
  17. Disconnect the vacuum brake booster pushrod from the brake pedal clevis pin.
  18. Remove the brake pedal assembly to booster stud mounting nuts.
  19. Remove the vacuum brake booster from the vehicle.
  20. Remove the brake booster mounting gasket, if gasket replacement is necessary.

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

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

    3. 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.

  3. Install the brake pedal assembly to booster stud mounting nuts.

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


    Object Number: 569134 Size: SH
  4. Apply a small amount of lubricant, (GM P/N 12346293) or equivalent to the clevis pin of the brake pedal.
  5. Connect the vacuum brake booster pushrod to the brake pedal clevis pin.
  6. Install the foam spacer (1) to the brake pedal clevis pin.
  7. Install the retainer clip (2) to the brake pedal clevis pin.
  8. Install the left knee bolster. Refer to Driver Knee Bolster Panel Replacement in Instrument Panel, Gages, and Console.
  9. Install the left closeout insulator panel. Refer to Instrument Panel Insulator Panel Replacement - Left Side in Instrument Panel, Gages, and Console.
  10. Connect the secondary air injection pipe. Refer to Secondary Air Injection Shutoff Valve Replacement - Bank 1 in Engine Controls - 4.6L.
  11. Connect the shift control cable to the shaft lever pin. Refer to Range Selector Lever Cable Replacement in Axle Transaxle - 4T80E.
  12. Install the vacuum brake booster check valve.
  13. Install the master cylinder to the vacuum brake booster. Refer to Master Cylinder Replacement .
  14. Connect the accelerator cable. Refer to Accelerator Control Cable Replacement in Engine Controls - 4.6L.
  15. Install the air cleaner assembly. Refer to Air Cleaner Assembly Replacement in Engine Controls - 4.6L.
  16. Install the cruise control module. Refer to Cruise Control Module Replacement in Cruise Control.
  17. Install the cross vehicle brace. Refer to Cross Vehicle Brace Replacement in Body Front End.
  18. Move the shift lever to park.
  19. Remove the wheel chock from the wheels.