GM Service Manual Online
For 1990-2009 cars only
Makes 🢒 Chevrolet 🢒 2004 🢒 Corvette 🢒 Engine 🢒 Engine Controls - 5.7L 🢒 Secondary Air Injection Check Valve and Check Valve Pipe Replacement - Bank 2

Removal Procedure
  1. Remove the intake manifold. Refer to Intake Manifold Replacement in Engine Mechanical.

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

  2. Remove the clamps and secondary air injection (AIR) hoses from the AIR system right pipe.

    3. Object Number: 63229 Size: SH
  3. Remove the AIR pipe bolt from the cylinder head.

    4. Object Number: 59633 Size: SH
  4. Remove the right AIR pipe from the manifold.
  5. Unscrew the check valve from the AIR pipe.
  6. Before replacing a check valve, test the valve for proper operation.
    7. 6.1. Install a vacuum pump to the nipple side of the check valve, AIR pump side.
    6.2. Pump the vacuum pump to 10 inches Hg and observe the gage.
    6.3. Replace the check valve if the vacuum bleeds down to zero within 5 seconds.

Installation Procedure

    Notice: Refer to Fastener Notice in the Preface section.


    Object Number: 59633 Size: SH
  1. Screw the check valve onto the AIR pipe.

    2. Tighten
    Tighten the check valve to 23 N·m (17 lb ft).

  2. Connect the right AIR pipe to the exhaust manifold.

    3. Tighten
    Tighten the AIR pipe to the exhaust manifold to 20 N·m (15 lb ft).


    Object Number: 63229 Size: SH
  3. Install the AIR pipe bolt from the cylinder head.
  4. Install the hose and the clamp to the check valve.
  5. Install the intake manifold. Refer to Intake Manifold Replacement in Engine Mechanical.
  6. Check the AIR system for proper operation.
  7. Connect the negative battery cable. Refer to Battery Negative Cable Disconnection and Connection in Engine Electrical.
  8. Program the transmitters. Refer to Transmitter Programming in Keyless Entry.