GM Service Manual Online
For 1990-2009 cars only

Removal Procedure

  1. Partially drain the cooling system. Refer to Cooling System Draining and Filling .

  2. Object Number: 33611  Size: SH
  3. Remove the exhaust manifold heat shield bolts.
  4. Remove the exhaust manifold heat shield.

  5. Object Number: 25883  Size: SH
  6. Remove the coolant air bleed pipe retaining bolt from the cylinder head.
  7. Reposition the surge tank inlet hose clamp from the surge tank.

  8. Object Number: 25885  Size: SH
  9. Remove the surge tank inlet hose from the surge tank.

  10. Object Number: 27409  Size: SH
  11. Remove the air bleed pipe from the vehicle.

Installation Procedure


    Object Number: 27409  Size: SH
  1. Install the air bleed pipe to the coolant outlet housing.
  2. Install the surge tank hose to the surge tank.

  3. Object Number: 25885  Size: SH
  4. Reposition the surge tank hose clamp to the surge tank.

  5. Object Number: 25883  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.

  6. Install the air bleed pipe, retaining.
  7. Tighten
    Tighten the air bleed pipe bolt to 14 N·m (10 lb ft).


    Object Number: 33611  Size: SH
  8. Install exhaust manifold heat shield.
  9. Install the exhaust manifold heat shield bolt.
  10. Tighten
    Tighten the exhaust manifold heat shield bolts to 14 N·m (10 lb ft.

  11. Fill the cooling system. Refer to Cooling System Draining and Filling .