GM Service Manual Online
For 1990-2009 cars only

Exhaust Manifold Replacement Left Side

Removal Procedure

  1. Remove the air cleaner duct. Refer to Engine Controls.
  2. Remove the exhaust crossover. Refer to Exhaust Crossover Replacement .
  3. Remove the electric engine cooling fans.

  4. Object Number: 57260  Size: SH
  5. Remove the exhaust manifold retaining nuts.
  6. Remove the exhaust manifold and heat shield.
  7. Remove the exhaust manifold gasket.
  8. If the exhaust manifold is being replaced, transfer the following parts:
  9. • The secondary air injection pipe
    • The heat shield

Installation Procedure


    Object Number: 57260  Size: SH
  1. Install the exhaust manifold gasket.
  2. Install the exhaust manifold and heat shield.
  3. Install the exhaust manifold nuts.
  4. Tighten
    Tighten the nuts to 13 N·m (115 lb in).

    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.

  5. Install the electric engine cooling fans.
  6. Install the exhaust crossover. Refer to Exhaust Crossover Replacement .
  7. Install the air cleaner duct. Refer to Engine Controls.

Exhaust Manifold Replacement Right Side

Removal Procedure

  1. Remove the air cleaner duct. Refer to Engine Controls.
  2. Remove the exhaust crossover pipe. Refer to Exhaust Crossover Replacement .
  3. Disconnect the EGR tube from the exhaust manifold.
  4. Raise and suitably support the vehicle. Refer to General Information.
  5. Remove the front exhaust pipe and the converter assembly.
  6. Remove the oxygen sensor.
  7. Remove the exhaust pipe front heat shield.
  8. Remove the rear generator brace.
  9. Remove the transmission dipstick tube.
  10. Remove the intermediate shaft from the steering gear. Refer to Power Steering Gear and Pump.
  11. Remove the exhaust manifold nuts.
  12. Install the jacking fixture in order to support the rear cradle.
  13. Remove the rear frame bolts.
  14. Lower the frame.
  15. Remove the steering gear heat shield. Refer to Power Steering Gear and Pump.
  16. Remove the exhaust manifold and heat shield.

  17. Object Number: 57260  Size: SH
  18. Remove the exhaust manifold gasket.
  19. Clean the gasket mating surfaces.
  20. If the exhaust manifold is being replaced, transfer the following parts:
  21. • The studs
    • The heat shield

Installation Procedure


    Object Number: 57260  Size: SH
  1. Install the exhaust manifold gasket.
  2. Install the exhaust manifold and heat shield.
  3. Install the exhaust manifold nuts.
  4. Tighten
    Tighten the nuts to 13 N·m (115 lb in).

    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.

  5. Install the steering gear heat shield. Refer to Power Steering Gear and Pump.
  6. Raise the frame.
  7. Install the rear frame bolts. Refer to Body Dimensions and Underbody.
  8. Remove the jacking fixture.
  9. Connect the intermediate shaft to the steering gear. Refer to Power Steering Gear and Pump.
  10. Install the transmission dipstick tube.
  11. Install the rear generator brace.
  12. Install the exhaust pipe front heat shield.
  13. Install the oxygen sensor.
  14. Install the front exhaust pipe and the converter assembly.
  15. Lower the vehicle.
  16. Connect the EGR tube to the exhaust manifold.
  17. Install the exhaust crossover pipe. Refer to Exhaust Crossover Replacement .
  18. Install the air cleaner duct.