Tools Required

1. Recover the refrigerant from the A/C system. Refer to Refrigerant Recovery and Recharging in Heating, Ventilation and Air Conditioning.
2. Drain the cooling system. Refer to Cooling System Draining and Filling .
3. Remove the condenser. Refer to Condenser Replacement in Heating, Ventilation and Air Conditioning.
4. Disengage tension on the radiator inlet hose clamp at the radiator using J 38185 .



5. Disconnect the radiator inlet hose from the radiator.

Important: Lift up on the cooling fan and shroud assembly to disengage the tabs from the radiator slots.

6. Remove the cooling fan and shroud assembly from the radiator. Refer to Cooling Fan and Shroud Replacement .



7. Disengage tension and reposition the surge tank inlet hose clamp at the radiator.
8. Disconnect the surge tank inlet hose from the radiator.
9. Vehicles equipped with a transmission oil cooler, disconnect the upper transmission oil cooler line from the radiator. Refer to Transmission Fluid Cooler Hose/Pipe Quick-Connect Fitting Disconnection and Connection in Automatic Transmission - 4L60-E/4L65-E.
10. Vehicles equipped with a engine oil cooler, disconnect the upper engine oil cooler line from the radiator. Refer to Engine Oil Cooler Hose/Pipe Replacement .
11. Raise and support the vehicle. Refer to Lifting and Jacking the Vehicle in General Information.



12. Disengage tension on the radiator outlet hose clamp at the radiator using the J 38185 .
13. Disconnect the radiator outlet hose from the radiator.
14. Vehicles equipped with a transmission oil cooler, disconnect the lower transmission oil cooler line from the radiator. Refer to Transmission Fluid Cooler Hose/Pipe Quick-Connect Fitting Disconnection and Connection in Automatic Transmission - 4L60-E/4L65-E.
15. Vehicles equipped a with engine oil cooler, disconnect the lower engine oil cooler line from the radiator. Refer to Engine Oil Cooler Hose/Pipe Replacement .
16. Remove the radiator from the vehicle.

1. Install the radiator to the vehicle.
2. Raise the vehicle.
3. Vehicles equipped with a engine oil cooler, connect the lower engine oil cooler line to the radiator. Refer to Engine Oil Cooler Hose/Pipe Replacement .
4. Vehicles equipped with a transmission oil cooler, connect the lower transmission oil cooler line to the radiator. Refer to Transmission Fluid Cooler Hose/Pipe Quick-Connect Fitting Disconnection and Connection in Automatic Transmission - 4L60-E/4L65-E.



5. Connect the radiator outlet hose to the radiator.
6. Engage tension on the radiator outlet hose clamp at the radiator.
7. Lower the vehicle.
8. Vehicle equipped with a transmission oil cooler, connect the upper transmission oil cooler line to the radiator. Refer to Transmission Fluid Cooler Hose/Pipe Quick-Connect Fitting Disconnection and Connection in Automatic Transmission - 4L60-E/4L65-E.
9. Vehicles equipped with a engine oil cooler, connect the upper engine oil cooler line to the radiator. Refer to Engine Oil Cooler Hose/Pipe Replacement .



10. Connect the surge tank inlet hose to the radiator.
11. Engage tension on the surge tank inlet hose clamp at the radiator.

Important: Lift up on the cooling fan and shroud assembly and engage the tabs to the radiator slots.

12. Install the cooling fan and shroud assembly to the radiator. Refer to Cooling Fan and Shroud Replacement .



13. Connect the radiator inlet hose to the radiator.
14. Engage tension on the radiator inlet hose clamp at the radiator using J 38185 .
15. Install the condenser. Refer to Condenser Replacement in Heating, Ventilation and Air Conditioning.
16. Fill the cooling system. Refer to Cooling System Draining and Filling .
17. Evacuate and recharge the A/C system. Refer to Refrigerant Recovery and Recharging in Heating, Ventilation and Air Conditioning.
18. Leak test the fittings of the component using J 39400-A .
19. Inspect the transmission fluid level. Refer to Transmission Fluid Check in Automatic Transmission - 4L60-E/4L65-E.