GM Service Manual Online
For 1990-2009 cars only

Radiator Replacement Gasoline Engines

Removal Procedure

    Warning: Refer to Battery Disconnect Warning in the Preface section.


    Object Number: 1774298  Size: SH
  1. Disconnect the negative battery cable.
  2. Drain the engine cooling system. Refer to Cooling System Draining and Filling.
  3. Remove the engine cover and the engine cover bracket.
  4. Disconnect the both cooling fan electrical connectors and the A/C pressure sensor connector.

  5. Object Number: 1774316  Size: SH
  6. Remove the radiator grill upper guide. Refer to Grille Replacement.
  7. Remove the A/C condenser upper and lower bracket from the radiator. Refer to Air Conditioning Condenser Replacement.
  8. Hang the A/C condenser to prevent it from falling down.

  9. Object Number: 1774318  Size: SH
  10. Remove the radiator upper bracket retaining bolts.
  11. Remove the radiator upper brackets.

  12. Object Number: 1774321  Size: SH
  13. Disconnect the transaxle cooler pipes from the lower radiator tank, if equipped.
  14. Loosen the upper radiator hose clamp and then disconnect the upper radiator hose from the radiator.
  15. Loosen the lower radiator hose clamp and then disconnect the lower radiator hose from the radiator.
  16. Loosen the clamp and disconnect the coolant return hose.

  17. Object Number: 1774322  Size: SH
  18. Lift and carefully support the vehicle
  19. Remove the condenser, radiator, fan module (CRFM) assembly support bracket mounting upper bolts.
  20. Remove the CRFM assembly support bracket through bolts and nuts.
  21. Remove the both CRFM assembly support brackets.

  22. Object Number: 1774323  Size: SH
  23. Carefully lower the radiator and fan assembly from the vehicle.
  24. Remove the radiator.
  25. Caution: The heat exchanger fins are necessary for good heat transfer. Do not brush the fins. This may cause damage to the fins, reducing heat transfer.

    Note: Remove the bugs, leaves, dirt and other debris by blowing compressed air through the engine side of the radiator.

    Some conditions may require the use of warm water and a mild detergent.

       • Clean the radiator cooling fins.
       • Straighten any damaged cooling fins.

  26. Remove the cooling fan assembly from the radiator if necessary.

Installation Procedure


    Object Number: 1774323  Size: SH
  1. Install the cooling fan assembly if necessary.
  2. Install the radiator.
  3. Carefully lift the radiator into the position previously removed.

  4. Object Number: 1774322  Size: SH
  5. Install the both CRFM assembly support brackets.
  6. Caution: Refer to Fastener Caution in the Preface section.

  7. Install the CRFM assembly support bracket through bolts and nuts.
  8. Tighten
    Tighten the CRFM assembly support bracket through bolts and nuts to 50 N·m (37 lb ft).

  9. Install the CRFM assembly support bracket mounting upper bolts.
  10. Tighten
    Tighten the CRFM assembly support bracket mounting upper bolts to 50 N·m (37 lb ft).


    Object Number: 1774321  Size: SH
  11. Connect the lower radiator hose to the radiator and then secure the clamp.
  12. Connect the upper radiator hose to the radiator and then secure the clamp.
  13. Connect the transaxle cooler pipes to the radiator, if equipped.
  14. Connect the coolant return hose.

  15. Object Number: 1774318  Size: SH
  16. Install the A/C condenser to the radiator.
  17. Install the radiator upper brackets.
  18. Tighten
    Tighten the radiator upper bracket retaining bolts to 20 N·m (15 lb ft).


    Object Number: 1774316  Size: SH
  19. Install the radiator grill upper guide. Refer to Grille Replacement.

  20. Object Number: 1758495  Size: SH
  21. Install the engine cover bracket and then the engine cover.
  22. Fill the engine cooling system. Refer to Cooling System Draining and Filling.
  23. Connect the negative battery.

Radiator Replacement Diesel Engines

Removal Procedure


    Object Number: 1774275  Size: SH

    Warning: To avoid being burned, do not remove the radiator cap or surge tank cap while the engine is hot. The cooling system will release scalding fluid and steam under pressure if radiator cap or surge tank cap is removed while the engine and radiator are still hot.

  1. Remove the engine cover. Refer to Engine Cover Replacement.
  2. Remove the charge air cooler inlet/outlet hoses. Refer to Charge Air Cooler Inlet Pipe and Outlet Pipe Replacement.
  3. Drain the engine coolant. Refer to Cooling System Draining and Filling.

  4. Object Number: 1774316  Size: SH
  5. Remove the radiator grill upper guide. Refer to Grille Replacement.
  6. Remove the engine undercover. Refer to Engine Shield Replacement.
  7. Discharge the A/C system, if equipped. Refer to Refrigerant Recovery and Recharging.

  8. Object Number: 1774318  Size: SH
  9. Remove the radiator upper bracket.

  10. Object Number: 1774321  Size: SH
  11. Disconnect the transaxle oil cooler line from the automatic transaxle, if equipped.
  12. Disconnect the radiator upper/lower hoses from the radiator.

  13. Object Number: 1820423  Size: SH
  14. Remove the A/C condenser inlet/outlet pipes from the A/C condenser, if equipped. Refer to Air Conditioning Condenser Replacement.
  15. Remove the radiator lower bracket from the cradle.

  16. Object Number: 1774278  Size: SH
  17. Carefully lower the radiator and fan assembly from the vehicle.
  18. Remove the radiator assembly.

  19. Object Number: 1820428  Size: SH
  20. Remove the transaxle oil cooler and line, if equipped.
  21. Remove the A/C condenser.
  22. Remove the charge air cooler.

Cleaning Procedure


Object Number: 1820428  Size: SH

Note:  The radiator fins are necessary for good heat transfer. Do not brush the fins. This may cause damage to the fins, reducing heat transfer.

Remove bugs, leaves, dirt and other debris by blowing compressed air through the engine side of the radiator. Some conditions may require the use of warm water and a mild detergent.

    • Clean the radiator cooling fins.
    • Straighten any damaged cooling fins.

Installation Procedure


    Object Number: 1820428  Size: SH
  1. Install the charge air cooler.
  2. Install the A/C condenser.
  3. Caution: Refer to Fastener Caution in the Preface section.

  4. Install the transaxle oil cooler and line, if equipped.
  5. Tighten

        • Tighten the charge air cooler retaining bolts to 8.5 N·m (75.2 lb in).
        • Tighten the A/C condenser retaining bolts to 16 N·m (11.8 lb ft).
        • Tighten the transaxle oil cooler and line retaining bolts to 10 N·m (88.5 lb in).

    Object Number: 1774323  Size: SH
  6. Install the radiator assembly.

  7. Object Number: 1820423  Size: SH
  8. Install the radiator lower bracket to the cradle.
  9. Tighten
    Tighten the radiator lower bracket bolts and nuts to 50 N·m (36.9 lb ft).


    Object Number: 1774318  Size: SH
  10. Install the radiator upper bracket retaining.
  11. Tighten
    Tighten the radiator upper bracket bolts 20 N·m (14.8 lb ft).


    Object Number: 1774316  Size: SH
  12. Install the engine undercover. Refer to Engine Shield Replacement.
  13. Install the radiator grill upper guide. Refer to Grille Replacement.

  14. Object Number: 1774275  Size: SH
  15. Install the charge air cooler inlet/outlet hoses. Refer to Charge Air Cooler Inlet Pipe and Outlet Pipe Replacement.
  16. Install the engine cover. Refer to Engine Cover Replacement.
  17. Fill the engine cooling system. Refer to Cooling System Draining and Filling.
  18. Charge the A/C system, if equipped. Refer to Refrigerant Recovery and Recharging.