GM Service Manual Online
For 1990-2009 cars only
Makes 🢒 Oldsmobile 🢒 2003 🢒 Aurora 🢒 Engine 🢒 Engine Cooling 🢒 Secondary Air Injection Shutoff Valve Replacement - Bank 2

Removal Procedure
  1. Remove the air cleaner assembly. Refer to Air Cleaner Assembly Replacement .

    2. Object Number: 784723 Size: SH
  2. Disconnect the vacuum lines.

    3. Object Number: 784721 Size: SH
  3. Loosen and lower the pinch clamp connecting the bank 2 intermediate pipe/hose to the bank 2 shut-off valve.
  4. Disconnect the hose from the shut-off valve.

    5. Object Number: 602323 Size: SH
  5. Remove the two nuts (1) securing the bank 2 AIR shut-off to the bracket.
  6. Remove the bank 2 AIR shut-off valve from the bracket.

Installation Procedure

    Object Number: 602323 Size: SH
  1. Install the bank 2 AIR shut-off valve and new gasket to the bank 2 outlet pipe.

    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 two nuts (1) securing the shut-off valve to the bracket.

    3. Tighten
    Tighten the three nuts to 9 N·m (80 lb in).


    Object Number: 784721 Size: SH
  3. Install the bank 2 intermediate pipe/hose and clamp to the shut-off valve.

    4. Object Number: 784723 Size: SH
  4. Install the vacuum lines.
  5. Install the air cleaner assembly. Refer to Air Cleaner Assembly Replacement .