GM Service Manual Online
For 1990-2009 cars only

Exhaust Manifold Replacement Left Side

Removal Procedures

  1. Disconnect the negative battery cables. Refer to

    Caution: Unless directed otherwise, the ignition and start switch must be in the OFF or LOCK position, and all electrical loads must be OFF before servicing any electrical component. Disconnect the negative battery cable to prevent an electrical spark should a tool or equipment come in contact with an exposed electrical terminal. Failure to follow these precautions may result in personal injury and/or damage to the vehicle or its components.

    in General Information.
  2. Remove the engine cover. Refer to Interior Trim.
  3. Remove the heat shield from the turbocharger.
  4. Remove the engine oil level indicator tube (left side).
  5. Remove the transmission oil level indicator tube (right side).
  6. Raise the vehicle, if necessary. Support the vehicle with safety stands.
  7. Remove the glow plugs.
  8. Remove the exhaust pipes from the exhaust manifold to the turbocharger. Refer to Turbocharger.

  9. Object Number: 68325  Size: SH
  10. Remove the left exhaust manifold bolts.
  11. Remove the left exhaust manifold.
  12. Clean the following items:
  13. • The sealing surfaces on the exhaust manifold
    • The sealing surfaces on the cylinder head
    • The threads on the manifold bolts

Installation Procedures


    Object Number: 68325  Size: SH
  1. Install the left exhaust manifold to the cylinder head.
  2. Install the left exhaust manifold bolts.
  3. Tighten
    Tighten the bolts to 35 N·m (26 lb ft).

    Notice: Use the correct fastener in the correct location. Replacement fasteners must be the correct part number for that application. Fasteners requiring replacement or fasteners requiring the use of thread locking compound or sealant are identified in the service procedure. Do not use paints, lubricants, or corrosion inhibitors on fasteners or fastener joint surfaces unless specified. These coatings affect fastener torque and joint clamping force and may damage the fastener. Use the correct tightening sequence and specifications when installing fasteners in order to avoid damage to parts and systems.

  4. Install the exhaust pipe from the turbocharger to the exhaust manifold.
  5. Install the glow plugs. Refer to Engine Electrical.
  6. Lower the vehicle, if raised.
  7. Install the transmission oil level indicator tube (right side). Refer to Automatic Transmission.
  8. Install the engine oil level indicator tube (left side).
  9. Tighten
    Tighten the oil level indicator tube bracket bolt to 4 N·m (35 lb in).

  10. Install the heat shield to the turbocharger assembly.
  11. Install the engine cover.
  12. Connect the negative battery cables.

Exhaust Manifold Replacement Right Side

Removal Procedures

  1. Disconnect the negative battery cables. Refer to

    Caution: Unless directed otherwise, the ignition and start switch must be in the OFF or LOCK position, and all electrical loads must be OFF before servicing any electrical component. Disconnect the negative battery cable to prevent an electrical spark should a tool or equipment come in contact with an exposed electrical terminal. Failure to follow these precautions may result in personal injury and/or damage to the vehicle or its components.

    in General Information.
  2. Remove the engine cover. Refer to Interior Trim.
  3. Remove the heat shield from the turbocharger.
  4. Remove the engine oil level indicator tube (left side).
  5. Remove the transmission oil level indicator tube (right side).
  6. Raise the vehicle, if necessary. Support the vehicle with safety stands.
  7. Remove the glow plugs. Refer to Engine Electrical.
  8. Remove the exhaust pipes from the exhaust manifold to the turbocharger. Refer to Turbocharger.

  9. Object Number: 68327  Size: SH
  10. Remove the right exhaust manifold bolts.
  11. Remove the right exhaust manifold.
  12. Clean the following items:
  13. • The sealing surfaces on the exhaust manifold
    • The sealing surfaces on the cylinder head
    • The threads on the manifold bolts

Installation Procedures


    Object Number: 68327  Size: SH
  1. Install the right exhaust manifold to the cylinder head.
  2. Install the right exhaust manifold bolts.
  3. Tighten
    Tighten the bolts to 35 N·m (26 lb ft).

    Notice: Use the correct fastener in the correct location. Replacement fasteners must be the correct part number for that application. Fasteners requiring replacement or fasteners requiring the use of thread locking compound or sealant are identified in the service procedure. Do not use paints, lubricants, or corrosion inhibitors on fasteners or fastener joint surfaces unless specified. These coatings affect fastener torque and joint clamping force and may damage the fastener. Use the correct tightening sequence and specifications when installing fasteners in order to avoid damage to parts and systems.

  4. Install the exhaust the pipe from the turbocharger to the exhaust manifold.
  5. Install the glow plugs. Refer to Engine Electrical.
  6. Lower the vehicle, if raised.
  7. Install the transmission oil level indicator tube (right side). Refer to Automatic Transmission.
  8. Install the engine oil level indicator tube (left side).
  9. Tighten
    Tighten the oil level indicator tube bracket bolt to 4 N·m (35 lb in).

  10. Install the heat shield to the turbocharger assembly.
  11. Install the engine cover.
  12. Connect the negative battery cables.