GM Service Manual Online
For 1990-2009 cars only

Exhaust Manifold Replacement 2.4L

Removal Procedure

    Caution: Refer to Battery Disconnect Caution in the Preface section.


    Object Number: 1765842  Size: SH
  1. Disconnect the negative battery cable.
  2. Disconnect the front heated oxygen sensor connector.

  3. Object Number: 1758662  Size: SH
  4. Remove the exhaust manifold heat shield retaining bolts.
  5. Remove the exhaust manifold heat shield retaining bolts.

  6. Object Number: 1758551  Size: SH
  7. Remove the pup converter-to-exhaust front pipe retaining nuts.
  8. Remove the exhaust front pipe mounting bracket bolt and nut.

  9. Object Number: 1758667  Size: SH
  10. Remove the exhaust manifold retaining nuts in the sequence shown.
  11. Remove the exhaust manifold.
  12. Remove the exhaust manifold gasket.
  13. Clean the sealing surfaces of the exhaust manifold and the cylinder head.

Installation Procedure


    Object Number: 1758668  Size: SH
  1. Install a new exhaust manifold gasket.
  2. Install the exhaust manifold.
  3. Notice: Refer to Fastener Notice in the Preface section.

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


    Object Number: 1758551  Size: SH
  6. Install the exhaust front pipe-to-pup converter. Refer to Front Pipe Replacement .
  7. Tighten

        • Tighten the pup converter-to-exhaust front pipe retaining nuts to 40 N·m (30 lb ft).
        • Tighten the exhaust front pipe mounting bracket bolt and nut to 40 N·m (30 lb ft).

    Object Number: 1758662  Size: SH
  8. Install the exhaust manifold heat shield.
  9. Tighten
    Tighten the exhaust manifold heat shield bolts to 15 N·m (11 lb ft).


    Object Number: 1765842  Size: SH
  10. Connect the front heated oxygen sensor connector.
  11. Connect the negative battery cable.

Exhaust Manifold Replacement 2.0L Diesel

Removal Procedure

    Caution: Refer to Battery Disconnect Caution in the Preface section.


    Object Number: 1820433  Size: SH
  1. Disconnect the negative battery cable
  2. Remove the engine cover. Refer to Engine Cover Replacement .
  3. Remove the charge air system hoses and ducts. Refer to Charge Air Cooler Inlet Pipe and Outlet Pipe Replacement .

  4. Object Number: 1822512  Size: SH
  5. Remove the PCV valve and adapter. Refer to Positive Crankcase Ventilation Valve Replacement and Positive Crankcase Ventilation Hose/Pipe/Tube Replacement .

  6. Object Number: 1820482  Size: SH
  7. Remove the exhaust heat shield.

  8. Object Number: 1820618  Size: SH
  9. Remove the pre-catalyst. Refer to Catalytic Converter Replacement .
  10. Remove the turbocharger from the exhaust manifold. Refer to Turbocharger Replacement .

  11. Object Number: 1822528  Size: SH
  12. Remove the EGR cooler inlet pipe from the EGR valve with the gasket.
  13. Remove the exhaust manifold with the EGR cooler inlet pipe.
  14. Remove the EGR cooler inlet pipe from the exhaust manifold.

Installation Procedure


    Object Number: 1822528  Size: SH
  1. Install the EGR cooler inlet pipe to the exhaust manifold.
  2. Install the exhaust manifold to the cylinder head with a new gasket.
  3. Notice: Refer to Fastener Notice in the Preface section.

  4. Install the EGR cooler inlet pipe to the EGR valve with a new gasket.
  5. Tighten

        • Tighten the EGR cooler inlet pipe nuts (to exhaust manifold) to 33 N·m (24.3 lb ft).
        • Tighten the exhaust manifold nuts to 33 N·m (24.3 lb ft).
        • Tighten the EGR cooler inlet pipe bolts (to EGR valve) to 20 N·m (14.8 lb ft).

    Object Number: 1820482  Size: SH
  6. Install the exhaust manifold heat shield.
  7. Tighten
    Tighten the exhaust manifold heat shield nuts and bolt to 20 N·m (14.8 lb ft).