GM Service Manual Online
For 1990-2009 cars only

Exhaust Manifold Replacement Left

Removal Procedure

    Caution: Before servicing any electrical component, the ignition and start switch must be in the OFF or LOCK position and all electrical loads must be OFF, unless instructed otherwise in these procedures. If a tool or equipment could easily come in contact with a live exposed electrical terminal, also disconnect the negative battery cable. Failure to follow these precautions may cause personal injury and/or damage to the vehicle or its components.

  1. Disconnect the negative battery cable.

  2. Object Number: 60240  Size: SH
  3. Install the glow plugs to the cylinder head. Refer to Glow Plug Replacement - Left Side or Glow Plug Replacement - Right Side in Engine Controls.

  4. Object Number: 391620  Size: SH
  5. Remove the heat shield from the front of the exhaust manifold.
  6. Raise the vehicle. Support the vehicle with safety stands. Refer to Lifting and Jacking the Vehicle in General Information.

  7. Object Number: 210390  Size: SH
  8. Remove the exhaust crossover pipe bolts from the exhaust manifolds.
  9. Lower the vehicle.

  10. Object Number: 60243  Size: SH
  11. Remove the exhaust manifold and the stud/bolts. Refer toExhaust Manifold Removal (L65)
  12. Clean and inspect the sealing surfaces on the cylinder head. Refer to Cylinder Head Cleaning and Inspection .
  13. Clean the threads on the exhaust manifold bolts and the stud/nuts.

Installation Procedure

  1. Install the exhaust manifold and the stud/bolts. Refer toExhaust Manifold Installation (L65)

  2. Object Number: 60243  Size: SH

    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.

  3. Install the exhaust manifold bolts.
  4. Tighten
    Tighten the bolts to 35 N·m (26 lb ft).


    Object Number: 399423  Size: SH
  5. Install the heat shield to the front of the exhaust manifold.
  6. Tighten
    Tighten the bolts and the nuts to 11 N·m (8 lb ft).

  7. Raise the vehicle.

  8. Object Number: 210390  Size: SH
  9. Install the exhaust crossover pipe and the bolts. Refer to Exhaust Pipe Replacement in Engine Exhaust.
  10. Remove the safety stands and lower the vehicle.
  11. Install the glow plugs to the cylinder head. Refer to Glow Plug Replacement - Left Side or Glow Plug Replacement - Right Side in Engine Controls.
  12. Connect the negative battery cable.

Exhaust Manifold Replacement Right

Removal Procedure

    Caution: Before servicing any electrical component, the ignition and start switch must be in the OFF or LOCK position and all electrical loads must be OFF, unless instructed otherwise in these procedures. If a tool or equipment could easily come in contact with a live exposed electrical terminal, also disconnect the negative battery cable. Failure to follow these precautions may cause personal injury and/or damage to the vehicle or its components.

  1. Disconnect the negative battery cable.

  2. Object Number: 60240  Size: SH
  3. Remove the glow plugs from the cylinder head. Refer to Glow Plug Replacement - Left Side or Glow Plug Replacement - Right Side in Engine Controls.

  4. Object Number: 59756  Size: SH
  5. Remove the turbocharger assembly from the exhaust manifold. Refer to Turbocharger .

  6. Object Number: 399425  Size: SH
  7. Remove the heat shield from the exhaust manifold.
  8. Raise the vehicle. Support the vehicle with safety stands. Refer to Lifting and Jacking the Vehicle in General Information.

  9. Object Number: 210390  Size: SH
  10. Remove the exhaust crossover pipe bolts from the exhaust manifold.
  11. Disconnect the front exhaust pipe. Refer to Exhaust Pipe Replacement in Engine Exhaust.
  12. Remove the safety stands and lower the vehicle.

  13. Object Number: 60245  Size: SH
  14. Remove the exhaust manifold and stud/bolts from the cylinder head.
  15. Remove the exhaust manifold from the cylinder head.
  16. Clean and inspect the sealing surfaces on the cylinder head. Refer to Cylinder Head Cleaning and Inspection .
  17. Clean the threads on the exhaust manifold bolts and the stud/nuts.

Installation Procedure


    Object Number: 60245  Size: SH
  1. Install the exhaust manifold to the cylinder head.
  2. 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.

  3. Install the exhaust manifold stud/bolts.
  4. Tighten
    Tighten the stud/bolts to 35 N·m (26 lb ft).

  5. Raise the vehicle. Support the vehicle with safety stands.

  6. Object Number: 60240  Size: SH
  7. Install the glow plugs in the cylinder head. Refer to Glow Plug Replacement - Left Side or Glow Plug Replacement - Right Side in Engine Controls.

  8. Object Number: 399425  Size: SH
  9. Install the heat shield to the exhaust manifold.

  10. Object Number: 59756  Size: SH
  11. Install the turbocharger to the exhaust manifold. Refer to Turbocharger .

  12. Object Number: 210390  Size: SH
  13. Install the exhaust crossover pipe to the exhaust manifold. Refer to Exhaust Pipe Replacement in Engine Exhaust.
  14. Connect the front exhaust pipe. Refer to Exhaust Pipe Replacement in Engine Exhaust.
  15. Remove the safety stands and lower the vehicle.
  16. Connect the negative battery cable.

Exhaust Manifold Replacement L-57

Removal Procedure

    Caution: Before servicing any electrical component, the ignition and start switch must be in the OFF or LOCK position and all electrical loads must be OFF, unless instructed otherwise in these procedures. If a tool or equipment could easily come in contact with a live exposed electrical terminal, also disconnect the negative battery cable. Failure to follow these precautions may cause personal injury and/or damage to the vehicle or its components.

  1. Disconnect the negative battery cable.

  2. Object Number: 60240  Size: SH
  3. Remove the glow plugs from the cylinder head. Refer to Glow Plug Replacement - Left Side or Glow Plug Replacement - Right Side in Engine Controls.
  4. Raise the vehicle. Support the vehicle with safety stands. Refer to Lifting and Jacking the Vehicle in General Information.
  5. Disconnect the exhaust pipes from the exhaust manifolds. Refer to Exhaust Pipe Replacement in Engine Exhaust.
  6. Remove the safety stands and lower the vehicle.

  7. Object Number: 60243  Size: SH
  8. Remove the exhaust manifold stud/bolts from the left cylinder head.
  9. Remove the exhaust manifold from the left cylinder head.

  10. Object Number: 68327  Size: SH
  11. Remove the exhaust manifold stud/bolts from the right cylinder head.
  12. Remove the exhaust manifold from the right cylinder head.
  13. Clean and inspect the sealing surfaces of the cylinder head. Refer to Cylinder Head Cleaning and Inspection .

Installation Procedure


    Object Number: 60243  Size: SH
  1. Install the left exhaust manifold to the cylinder head.
  2. 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.

  3. Install the exhaust manifold stud/bolts.
  4. Tighten
    Tighten the bolts to 35 N·m (26 lb ft).


    Object Number: 68327  Size: SH
  5. Install the right exhaust manifold to the cylinder head.
  6. Install the exhaust manifold stud/bolts to the right cylinder head.
  7. Tighten
    Tighten the bolts to 35 N·m (26 lb ft).


    Object Number: 60240  Size: SH
  8. Install the glow plugs to the cylinder head. Refer to Glow Plug Replacement - Left Side or Glow Plug Replacement - Right Side in Engine Controls.
  9. Raise the vehicle. Support the vehicle with safety stands.
  10. Install the exhaust pipes to the exhaust manifolds. Refer to Exhaust Pipe Replacement in Engine Exhaust.
  11. Remove the safety stands and lower the vehicle.
  12. Connect the negative battery cable.