GM Service Manual Online
For 1990-2009 cars only
Makes 🢒 Chevrolet 🢒 2001 🢒 Impala 🢒 HVAC 🢒 HVAC Systems - Manual 🢒 HVAC Control Vacuum Valve Replacement

Removal Procedure
  1. Remove the instrument panel accessory trim plate bezel. Refer to Instrument Panel Cluster Trim Plate Bezel Replacement in Instrument Panel, Gauges and Console.

    2. Object Number: 233693 Size: SH
  2. Remove the retaining screws from the HVAC control module.
  3. Disconnect the electrical connectors from the HVAC control module.
  4. Disconnect the vacuum connectors from the HVAC control vacuum valve.
  5. Remove the HVAC control module from the instrument panel.
  6. Remove the vacuum valve from the HVAC control module.

Installation Procedure
  1. Install the vacuum valve to the HVAC control module.

    2. Object Number: 233693 Size: SH
  2. Connect the electrical connectors to the HVAC control module.
  3. Connect the vacuum connectors to the HVAC control vacuum valve.
  4. Install the HVAC control module to the instrument panel.

    5. 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.

  5. Install the retaining screws to the HVAC control module.

    6. Tighten
    Tighten the HVAC control module retaining screw to 2 N·m (18 lb ft).

  6. Install the instrument panel accessory trim plate bezel. Refer to Instrument Panel Cluster Trim Plate Bezel Replacement in Instrument Panel, Gauges and Console.