Radiator: Service and Repair

Radiator Replacement (4.3L)

^ Tools Required
- J 38185 Hose Clamp Pliers

Removal Procedure





1. Drain the cooling system. Refer to Draining and Filling Cooling System.
2. Reposition the coolant recovery hose clamp from radiator.
3. Remove the coolant recovery reservoir hose from the radiator.





4. Using the J 38185 reposition the radiator inlet hose clamp from the radiator.
5. Remove the radiator inlet hose from the radiator.
6. Remove the fan shroud. Refer to Fan Shroud Replacement.
7. Using the J 38185 reposition the radiator outlet hose clamp from the radiator.
8. Remove the radiator outlet hose from the radiator.
9. Remove the engine oil cooler lines from the radiator. Refer to Engine Oil Cooler Pipe/Hose Quick Connect Fitting.
10. Remove the transmission oil cooler lines from the radiator. Refer to Transmission Fluid Cooler Line Quick Connect Fitting in Automatic Transmission - 4L60-E.





11. Remove the radiator.

Installation Procedure





1. Important: Inspect the rubber mounts before installing the radiator.

Install the radiator.
2. Install the transmission oil cooler lines to the radiator. Refer to Transmission Fluid Cooler Line Quick Connect Fitting in Automatic Transmission - 4L60-E.
3. Install the engine oil cooler line to the radiator. Refer to Engine Oil Cooler Pipe/Hose Quick Connect Fitting.





4. Install the radiator outlet hose to the radiator.
5. Using the J 38185 reposition the radiator outlet hose clamp to the radiator.
6. Install fan shroud. Refer to Fan Shroud Replacement.
7. Install the radiator inlet hose to the radiator.
8. Using the J 38185 reposition the radiator inlet hose clamp to the radiator.





9. Install the coolant recovery reservoir hose to the radiator.
10. Reposition the coolant recovery reservoir hose clamp to the radiator.
11. Fill the cooling system. Refer to Draining and Filling Cooling System.