GM Service Manual Online
For 1990-2009 cars only

Tools Required

J 43181 Quick Connect Release Tool

Removal Procedure

  1. Partially drain the engine coolant. Refer to Cooling System Draining and Filling .

  2. Object Number: 517972  Size: SH
  3. Disconnect the surge tank inlet hose (2) from the surge tank (1).

  4. Object Number: 518809  Size: SH
  5. Disconnect the connector (2) from the coolant level sensor.

  6. Object Number: 518257  Size: SH
  7. Remove the secondary AIR relay bracket mounting nuts (2).
  8. Remove the secondary AIR relay bracket (1).
  9. Using J 43181 , release the quick connect fitting at the surge tank outlet hose.

  10. Object Number: 517960  Size: SH
  11. Remove the surge tank mounting screw (3) and nuts (2).
  12. Remove the surge tank (1) from the mounting studs.

Installation Procedure


    Object Number: 517960  Size: SH
  1. Position the surge tank (1) on the mounting studs.
  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 surge tank bolt (3).
  4. Tighten
    Tighten the bolt to 6 N·m (53 lb in).

  5. Install the surge tank nuts (2).
  6. Tighten
    Tighten the nuts (2) to 6 N·m (53 lb in).

  7. Position the surge tank outlet hose and the quick connect fitting with the surge tank and press to engage.
  8. Verify the quick connect fitting is fully seated.

  9. Object Number: 518257  Size: SH
  10. Install the secondary AIR relay bracket (1) over the studs.
  11. Install the 2 secondary AIR relay bracket nuts (2).
  12. Tighten
    Tighten the nuts (2) to 6 N·m (53 lb in).


    Object Number: 518809  Size: SH
  13. Connect the connector (2) to the coolant level sensor.

  14. Object Number: 517972  Size: SH
  15. Connect the surge tank inlet hose (2) to the surge tank (1).
  16. Fill the cooling system. Refer to Cooling System Draining and Filling .