GM Service Manual Online
For 1990-2009 cars only
Makes 🢒 Cadillac 🢒 2003 🢒 Seville 🢒 Engine 🢒 Engine Controls - 4.6L 🢒 Secondary Air Injection Vacuum Control Solenoid Valve Replacement

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

    2. Object Number: 784723 Size: SH
  2. Disconnect the AIR vacuum control valve electrical connector.
  3. Disconnect the vacuum lines.
  4. Remove the nut securing the AIR vacuum control valve to the bank 1 AIR shut-off valve bracket.
  5. Remove the AIR vacuum control valve.

Installation Procedure

    Object Number: 784723 Size: SH

    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.

  1. Install the AIR vacuum control valve to the bank 1 AIR shut-off valve bracket.

    2. Tighten
    Tighten the nut to 9 N·m (80 lb in).

  2. Reconnect the vacuum lines.
  3. Reconnect the AIR vacuum control valve electrical connector.
  4. Install the fuel injector sight shield. Refer to Fuel Injector Sight Shield Replacement in Engine Mechanical.