GM Service Manual Online
For 1990-2009 cars only
Makes 🢒 Oldsmobile 🢒 1998 🢒 Silhouette Ext. 🢒 HVAC 🢒 HVAC Systems - Manual 🢒 Vacuum Tank Replacement

Removal Procedure
  1. Raise and support the vehicle. Refer to Lifting and Jacking the Vehicle in General Information.

    2. Object Number: 400646 Size: SH
  2. Disconnect the vacuum hose from the vacuum tank (1).
  3. Remove the two nuts (2) that secure the vacuum tank.
  4. Remove the vacuum tank (3).

Installation Procedure

    Object Number: 400646 Size: SH
  1. Install the vacuum tank (3).

    2. 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.

  2. Install the vacuum tank mounting nuts (2).

    3. Tighten
    Tighten the nuts to 10 N·m (89 lb in).

  3. Connect the vacuum hose (1) to the vacuum tank.
  4. Lower the vehicle.