GM Service Manual Online
For 1990-2009 cars only

Removal Procedure

  1. Remove the left and right side instrument panel insulator. Refer to Instrument Panel Insulator Replacement in Instrument Panel Gauges and Console.

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

  4. Object Number: 282277  Size: SH

    Important: It will be required to enter the vehicle from the drivers and passenger side to remove the bolts from the vacuum tank .

  5. Remove the bolts that secure the vacuum tank to the HVAC control module.
  6. 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.

    Important: It will be required to enter the vehicle from the drivers and passenger side to install the bolts to the vacuum tank .

  3. Install the bolts to the vacuum tank.
  4. Tighten
    Tighten the vacuum tank bolts to 1.5 N·m (13 lb in).


    Object Number: 419838  Size: SH
  5. Connect the vacuum hoses to the vacuum tank.
  6. Install the left and right side instrument panel insulator. Refer to Instrument Panel Insulator Replacement in Instrument Panel Gauges and Console.