GM Service Manual Online
For 1990-2009 cars only

Radiator Surge Tank Replacement LD8

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: 518257  Size: SH
  5. Remove the secondary AIR relay bracket mounting nuts (2).
  6. Remove the secondary AIR relay bracket (1).

  7. Object Number: 517960  Size: SH
  8. Remove the surge tank mounting retainer (3) and nuts (2).
  9. Remove the surge tank (1) from the mounting studs.
  10. Using J 43181 , release the quick connect fitting at the surge tank outlet hose.

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

Installation Procedure


    Object Number: 518809  Size: SH
  1. Connect the connector (2) to the coolant level sensor.
  2. Position the surge tank outlet hose and the quick connect fitting with the surge tank and press to engage.
  3. Verify the quick connect fitting is fully seated.


    Object Number: 517960  Size: SH
  4. Position the surge tank (1) on the mounting studs.

  5. Object Number: 518257  Size: SH
  6. Install the secondary AIR relay bracket (1) over the studs.
  7. Notice: Refer to Fastener Notice in the Preface section.

  8. Install the 2 secondary AIR relay bracket nuts (2).
  9. Tighten
    Tighten the nuts to 6 N·m (53 lb in).

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

  12. Install the surge tank retainer.

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