GM Service Manual Online
For 1990-2009 cars only

Installation Procedure


    Object Number: 1241680  Size: SH
  1. Install the exhaust manifold gasket.
  2. Install the exhaust manifold.
  3. Notice: Refer to Fastener Notice in the Preface section.

  4. Install the 8 exhaust manifold nuts and torque in the sequence shown.
  5. Tighten
    Tighten the exhaust manifold nuts 22 N·m (16 lb ft).


    Object Number: 1241561  Size: SH
  6. Install the catalytic converter-to-exhaust manifold nuts.
  7. Tighten
    Tighten the catalytic converter-to-exhaust manifold nuts to 40 N·m (30 lb ft).

  8. Install the exhaust manifold heat shield.
  9. Install the exhaust manifold heat shield bolts.
  10. Tighten
    Tighten the exhaust manifold heat shield bolts to 15 N·m (11 lb ft).

  11. Connect the O2 sensor.
  12. Connect the ignition wires to the spark plugs.
  13. Connect the negative battery cable.