GM Service Manual Online
For 1990-2009 cars only
Makes 🢒 Oldsmobile 🢒 1998 🢒 Silhouette 🢒 Engine 🢒 Engine Electrical 🢒 Vacuum Modulator Pipe Replacement

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

    2. Object Number: 161003 Size: SH
  2. Slide the conduit back from the vacuum modulator pipe connection at the vacuum modulator.

    3. Object Number: 161006 Size: SH
  3. Disconnect the vacuum line from the upper intake manifold.
  4. Disconnect the vacuum line from the vacuum modulator.
  5. Remove the vacuum modulator pipe.

Installation Procedure
  1. Install the vacuum modulator pipe.

    2. Object Number: 161006 Size: SH
  2. Connect the vacuum line to the vacuum modulator.
  3. Connect the vacuum line to the upper intake manifold.

    4. Object Number: 161003 Size: SH
  4. Slide the conduit back over the vacuum modulator pipe connection at the vacuum modulator.
  5. Install the fuel injector sight shield. Refer to Fuel Injector Sight Shield Replacement in Engine Mechanical.