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 1

Removal Procedure
  1. Remove the check valve clamp.

    2. Object Number: 59582 Size: SH

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

  2. Disconnect the secondary air injection (AIR) hose from the check valve.
  3. Unscrew the check valve from the AIR pipe.
  4. Remove the left AIR pipe from the manifold.
  5. Before replacing a check valve, test the valve for proper operation.
    6. 5.1. Install a vacuum pump to the nipple side of the check valve, AIR pump side.
    5.2. Pump the vacuum pump to 10 in Hg and observe the gage.
    5.3. 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: 59582 Size: SH
  1. Screw the check valve onto the AIR pipe.

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

  2. Connect the AIR pipe to the exhaust manifold.

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

  3. Install the AIR hose to the check valve.
  4. Install the check valve clamp.