GM Service Manual Online
For 1990-2009 cars only
Makes 🢒 Buick 🢒 2003 🢒 Century 🢒 HVAC 🢒 HVAC Systems - Automatic 🢒 Vacuum Tank Replacement

Removal Procedure
  1. Remove the instrument panel insulator. Refer to Instrument Panel Insulator Panel Replacement - Right Side in Instrument Panel, Gages, and Console.
  2. Remove the instrument panel insulator. Refer to Instrument Panel Insulator Panel Replacement - Left Side in Instrument Panel, Gages, and Console.

    3. Object Number: 419838 Size: SH
  3. Disconnect the vacuum hoses from the vacuum tank.

    4. Object Number: 282277 Size: SH
  4. Remove the screws that secure the vacuum tank to the HVAC module.
  5. Remove the vacuum tank.

Installation Procedure

    Object Number: 282277 Size: SH
  1. Install the vacuum tank to the HVAC control module.

    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 screws to the vacuum tank.

    3. Tighten
    Tighten the screws to 1.5 N·m (13 lb in).


    Object Number: 419838 Size: SH
  3. Connect the vacuum hoses to the vacuum tank.
  4. Install the instrument panel insulator. Refer to Instrument Panel Insulator Panel Replacement - Right Side in Instrument Panel, Gages, and Console.
  5. Install the instrument panel insulator. Refer to Instrument Panel Insulator Panel Replacement - Left Side in Instrument Panel, Gages, and Console.