GM Service Manual Online
For 1990-2009 cars only

Removal Procedure

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


    Object Number: 541456  Size: SH
  3. Disconnect the AIR crossover pipe from the shut-off valve.

  4. Object Number: 511633  Size: SH
  5. Disconnect the vacuum line from the shut-off valve.

  6. Object Number: 511626  Size: SH
  7. Remove the AIR shut-off valve nut.
  8. Remove the shut-off valve to manifold pipe fasteners.
  9. Remove the shut-off valve from the bracket.

Installation Procedure


    Object Number: 511626  Size: SH
  1. Install the shut-off valve to the bracket.
  2. Notice: Refer to Fastener Notice in the Preface section.

  3. Install the AIR shut-off valve to the manifold pipe fasteners.
  4. Tighten
    Tighten the AIR shut-off valve to 20 N·m (15 lb ft).

  5. Install the AIR shut-off valve nut.
  6. Tighten
    Tighten the nut to 10 N·m (89 lb in).

  7. Connect the vacuum line to shut-off valve.
  8. Connect the AIR crossover pipe to the shut-off valve.