GM Service Manual Online
For 1990-2009 cars only
Makes 🢒 Pontiac 🢒 2005 🢒 Bonneville 🢒 Body 🢒 Body Front End 🢒 Power Brake Booster Vacuum Check Valve and Hose Replacement

Removal Procedure
  1. Remove the fuel injector sight shield. Refer to Fuel Injector Sight Shield Replacement in Engine Mechanical - 3.8L.

    2. Object Number: 688427 Size: SH
  2. Disconnect the vacuum hose (2) and the brake booster vacuum check valve (4) from vacuum brake booster.
  3. Disconnect the vacuum hose (2) from the intake manifold vacuum port (1).

    4. Object Number: 688567 Size: SH
  4. Remove the brake booster vacuum check valve (2) from the brake booster vacuum hose (1).

Installation Procedure

    Object Number: 688567 Size: SH
  1. Install the brake booster vacuum check valve (2) to the brake booster vacuum hose (1).

    2. Object Number: 688427 Size: SH
  2. Connect the vacuum hose (2) to the intake manifold vacuum port (1).
  3. Connect the vacuum hose (2) and vacuum brake booster check valve (4) to vacuum brake booster.
  4. Install the fuel injector sight shield. Refer to Fuel Injector Sight Shield Replacement in Engine Mechanical - 3.8L.