GM Service Manual Online
For 1990-2009 cars only

Removal Procedure

    Important: It is not necessary to remove or disconnect the master cylinder from the vehicle in order to remove the vacuum booster. However, if both the vacuum booster and master cylinder are to be removed, remove the master cylinder first as described in Master Cylinder Replacement .


    Object Number: 153743  Size: SH
  1. Remove the master cylinder attaching nuts.
  2. Remove the master cylinder from the booster.
  3. Move the master cylinder forward just enough to clear the studs on the vacuum booster. This will flex the brake pipes slightly. Do not bend or distort the brake pipes.

  4. Disconnect the vacuum hose from the vacuum check valve.
  5. Remove the booster attaching nuts.
  6. Remove the booster.

  7. Object Number: 153743  Size: SH
  8. Remove the booster pushrod from the brake pedal.
  9. Tilt the entire vacuum booster slightly to work the booster pushrod off the pedal clevis pin without putting undue pressure in the pushrod.

  10. Remove the booster from the vehicle.

Installation Procedure


    Object Number: 153743  Size: SH
  1. Install the booster onto vehicle.
  2. Connect the booster pushrod to the brake pedal.
  3. Tilt the entire vacuum booster slightly. Work the booster pushrod onto the pedal clevis without putting undue pressure on the pushrod.

  4. Install the booster attaching nuts.
  5. Tighten
    Tighten the nuts to 28 N·m (20 lb ft).

    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 booster vacuum hose to the vacuum check valve.

  7. Object Number: 153743  Size: SH
  8. Install the master cylinder to the booster and the attaching nuts.
  9. Tighten
    Tighten the nuts to 28 N·m (20 lb ft)