GM Service Manual Online
For 1990-2009 cars only
Makes 🢒 Chevrolet 🢒 2006 🢒 Aveo 🢒 Engine 🢒 Engine Exhaust 🢒 Exhaust Manifold Replacement

Removal Procedure

    Object Number: 1371821 Size: SH

    Caution: In order to avoid being burned, do not service the exhaust system while it is still hot. Service the system when it is cool.

  1. Remove the exhaust manifold heat shield bolts.
  2. Remove the exhaust manifold heat shield.
  3. Disconnect the oxygen sensor electrical connector.

    4. Object Number: 1371822 Size: SH
  4. Remove the exhaust manifold lower flange nuts.

    5. Object Number: 1371824 Size: SH
  5. Remove the front exhaust pipe bracket bolts.

    6. Object Number: 1371826 Size: SH
  6. Remove the oxygen sensor. Refer to Oxygen Sensor Replacement or Heated Oxygen Sensor 1 Replacement .
  7. Remove the exhaust manifold nuts and the bolts.
  8. Remove the exhaust manifold.
  9. Remove the exhaust manifold gasket.

    10. Caution: Wear safety glasses in order to avoid eye damage.

  10. Clean the sealing surfaces of the exhaust manifold and cylinder head.

Installation Procedure

    Object Number: 1371827 Size: SH
  1. Install the exhaust manifold gasket.
  2. Install the exhaust manifold.

    3. Notice: Refer to Fastener Notice in the Preface section.

  3. Install the exhaust manifold bolts and the nuts.

    4. Tighten
    Tighten the exhaust manifold bolts and the nuts to 22 N·m (16 lb ft).


    Object Number: 1371828 Size: SH
  4. Install the front exhaust pipe bracket bolts and catalytic converter lower flange nuts.

    5. Tighten

        • Tighten the front exhaust pipe bracket bolts to 40 N·m (30 lb ft).
        • Tighten the catalytic converter lower flange nuts to 40 N·m (30 lb ft).

    Object Number: 1371829 Size: SH
  5. Install the oxygen sensor connector.
  6. Install the oxygen sensor. Refer to Oxygen Sensor Replacement or Heated Oxygen Sensor 1 Replacement .
  7. Install the heat shield.
  8. Install the heat shield bolts.

    9. Tighten
    Tighten the exhaust manifold heat shield bolts to 10 N·m (89 lb in).