GM Service Manual Online
For 1990-2009 cars only
Makes 🢒 Chevrolet 🢒 1997 🢒 Corvette 🢒 Brakes 🢒 Hydraulic Brakes 🢒 Power Vacuum Brake Booster Replacement

Removal Procedure

    Object Number: 70094 Size: SH
  1. Disconnect the negative battery cable. Refer to

    Caution: Unless directed otherwise, the ignition and start switch must be in the OFF or LOCK position, and all electrical loads must be OFF before servicing any electrical component. Disconnect the negative battery cable to prevent an electrical spark should a tool or equipment come in contact with an exposed electrical terminal. Failure to follow these precautions may result in personal injury and/or damage to the vehicle or its components.

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  2. Remove the washer solvent container retaining nuts.
  3. Lift the washer solvent container from the LH wheelhose.
  4. Disconnect the electrical connections and the washer hose from the container.
  5. Plug the washer pump outlet.

    6. Object Number: 63958 Size: SH
  6. Disconnect the electrical connector from the brake fluid level switch.

    7. Object Number: 63961 Size: SH
  7. Remove the brake lines from the master cylinder.

    8. Object Number: 63941 Size: SH
  8. Remove the nuts securing the master cylinder to the brake booster.
  9. Remove the master cylinder from the brake booster.

    10. Object Number: 63936 Size: SH
  10. Disconnect the brake booster vacuum check valve hose from the booster.
  11. Remove the drivers lower I/P closeout panel.

    12. Object Number: 63944 Size: SH
  12. Remove the input push rod retaining clip and pin from the brake pedal.

    13. Object Number: 63943 Size: SH
  13. Remove the brake booster mounting nuts and washers from the studs.
  14. Remove the brake booster and seal from the front of dash.
  15. Inspect the booster seal and sealing surfaces for damage. Replace if necessary.

Installation Procedure

    Object Number: 63943 Size: SH
  1. Install the seal and brake booster to the front of dash.
  2. Install brake booster mounting nuts and washers on to the studs.

    3. Tighten
    Tighten the brake booster mounting nuts to 21 N·m (15 lb ft).


    Object Number: 63944 Size: SH
  3. Install the input push rod pin and retaining clip to the brake pedal.
  4. Install the drivers lower I/P closeout panel.

    5. Object Number: 63936 Size: SH
  5. Connect the brake booster vacuum check valve hose to the brake booster.

    6. Object Number: 63941 Size: SH
  6. Install the master cylinder to the brake booster.
  7. Install the master cylinder retaining nuts.

    8. Tighten
    Tighten the master cylinder retaining nuts to 29 N·m (21 lb ft).


    Object Number: 63961 Size: SH
  8. Install the brake lines to the master cylinder.

    9. Tighten
    Tighten the brake pipe to master cylinder tube nuts to 16 N·m (12 lb ft).


    Object Number: 63958 Size: SH
  9. Connect the electrical to the brake fluid level switch.

    10. Object Number: 70094 Size: SH
  10. Connect the electrical and the washer hose to the washer solvent container.
  11. Install washer solvent container to LH wheelhouse.
  12. Install the washer solvent container retaining nuts.

    13. Tighten
    Tighten the washer solvent container nuts to 7.5 N·m (66 lb in).

  13. Connect the negative battery cable.

    14. Tighten
    Tighten the negative battery cable bolt to 15 N·m (11 lb ft).

  14. Bleed brake system as necessary. Refer to Manual Brake System Bleeding .