Radiator Replacement

Radiator Replacement (LS4)

Special Tools

J 38185 Hose Clamp Pliers

Removal Procedure

Caution: Refer to Battery Disconnect Caution (Battery Disconnect Caution).
1. Disconnect the negative battery cable. Refer to Battery Negative Cable Disconnection and Connection (LS4) (Service and Repair).
2. Remove the air cleaner assembly. Refer to Air Cleaner Assembly Replacement (Service and Repair).
3. Drain the cooling system. Refer to Cooling System Draining and Filling (LS4 GE47716 Fill) (Service and Repair)Cooling System Draining and Filling (LS4 Static Fill) (Service and Repair).
4. Remove the engine mount struts. Refer to Engine Mount Strut Replacement (Service and Repair).
5. Use J 38185 to reposition the upper radiator hose clamp from the radiator.
6. Remove the upper radiator hose from the radiator.
7. Remove the powertrain control module (PCM) harness clip from the fan shroud.
8. Remove the condenser tubes bracket bolt from the fan shroud.




9. Remove the bolt that connects the fan shroud to the condenser hold down bracket.
10. Remove the condenser hold down bracket from the radiator and condenser.




11. Remove the cooling fan shroud bolts.
12. Remove the coolant reservoir hose from the fan shroud LS4 only.
13. Remove the radiator vent hose from the right upper radiator tank LS4 only.




14. Remove the radiator upper support brackets and bolts that connect to the fan shroud.
15. Disconnect the engine cooling fan motors electrical connectors.
16. Remove the cooling fan motors electrical harness from the fan shroud clips.
17. Remove the cooling fan shroud.
18. Use J 38185 to reposition the lower radiator hose clamp from the radiator.
19. Remove the lower radiator hose from the radiator.
20. Disconnect the transaxle oil cooler pipes from the radiator. Refer to Transmission Fluid Cooler Hose/Pipe Quick-Connect Fitting Disconnection and Connection (Service and Repair).
21. Tilt the top of the radiator rearward.




22. Lift the condenser from the mounting tabs on the radiator (2). Position the condenser aside.
23. Remove the radiator.

Installation Procedure




1. Install the radiator to the lower mounts.





Important: Verify that the condenser is fully seated in the radiator mounting tabs.


2. Install the condenser to the mounting tabs on the radiator (2).
3. Install the condenser hold down bracket (1) to the radiator and condenser.
4. Install the lower radiator hose to the radiator.
5. Use J 38185 to install the lower radiator hose clamp to the radiator.





Important: Ensure the right and left edge of the fan shroud engages the radiator slots.


6. Install the cooling fan shroud.

Notice: Refer to Fastener Notice (Fastener Notice).

7. Install the condenser tubes bracket bolt to the fan shroud.

Tighten the bolts to 10 N.m (89 lb in).

8. Install the cooling fan motors electrical harness to the fan shroud clips.
9. Connect the engine cooling fan motors electrical connectors.
10. Install the cooling fan shroud bolts.

Tighten the bolts to 10 N.m (89 lb in).

11. Connect the transaxle oil cooler pipes to the radiator. Refer to Transmission Fluid Cooler Hose/Pipe Quick-Connect Fitting Disconnection and Connection (Service and Repair).




12. Install the radiator upper support brackets and bolts that connect to the fan shroud.

Tighten the bolts to 6 N.m (53 lb in).




13. Install the bolt that connects the fan shroud to the condenser hold down bracket.

Tighten the bolt to 6 N.m (53 lb in).

14. Install the PCM harness clip on to the fan shroud.
15. Install the upper radiator hose to the radiator.
16. Use J 38185 to install the upper radiator hose clamp to the radiator.
17. Install the air cleaner assembly. Refer to Air Cleaner Assembly Replacement (Service and Repair).
18. Install the coolant reservoir hose to the fan shroud.
19. Install the radiator vent hose to the right upper radiator tank and fill neck.
20. Install the engine mount struts. Refer to Engine Mount Strut Replacement (Service and Repair).
21. Fill the cooling system. Refer to Cooling System Draining and Filling (LS4 GE47716 Fill) (Service and Repair)Cooling System Draining and Filling (LS4 Static Fill) (Service and Repair).
22. Connect the negative battery cable. Refer to Battery Negative Cable Disconnection and Connection (LS4) (Service and Repair).

Notice: Do NOT overfill the transaxle. The overfilling of the transaxle causes foaming, loss of fluid, shift complaints, and possible damage to the transaxle.

23. Adjust the transaxle fluid level.