GM Service Manual Online
For 1990-2009 cars only
Makes 🢒 Chevrolet 🢒 2000 🢒 Lumina 🢒 Engine 🢒 Engine Controls - 3.1L (LG8) 🢒 Secondary Air Injection Check Valve and Check Valve Pipe Replacement - Bank 2

Removal Procedure

    Caution: Allow the engine to cool before servicing the secondary air injection AIR system in order to reduce the chance of severe burns.

  1. Disconnect the clamp and AIR hose from the AIR Check valve.
  2. Disconnect the vacuum line from the check valve.
  3. Remove the AIR pipe nut from the air pipe bracket .
  4. Disconnect the Air pipe assembly from the adaptors on the right exhaust manifold.
  5. Remove the right AIR pipe assembly from the manifold.
  6. Remove the two bolts from the bottom of the check valve.
  7. Seperate the check valve from the AIR pipe.

Installation Procedure
  1. Reinstall the two bolts through the pipe into the check valve.
  2. Place the check valve/pipe assembly onto the bracket stud and manifold adaptors.

    3. 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.

  3. Tighten the pipe to the manifold adaptors.
  4. Reinstall the nut on bracket stud.

    5. Tighten
    Tighten the locknut to 10 N·m (88 lb in).

  5. Connect the vacuum line to the check valve.
  6. Connect the clamp and AIR hose to the AIR Check valve.