Inlet

Radiator Hose Replacement - Inlet (4.8L, 5.3L, and 6.0L Engines)
Removal Procedure
1. Drain the cooling system. Refer to Draining and Filling Cooling System.





2. Loosen the air cleaner outlet duct clamps at the following locations:
- Throttle body
- Mass Airflow/Intake Air Temperature (MAF/IAT) sensor

3. Remove the air cleaner outlet duct.
4. If necessary, remove the engine sight shield. Refer to Engine Sight Shield Replacement (4.8L, 5.3L, and 6.0L (RPO LQ4)) or Engine Sight Shield Replacement (6.0L (RPO LQ9)) in Engine - 4.8L, 5.3L, and 6.0L.





5. Remove the radiator vent inlet hose from the radiator inlet hose clips.





6. Reposition the inlet hose clamp from the radiator.
7. Remove the inlet hose from the radiator.
8. Remove the inlet hose clip from the fan shroud.





9. Reposition the inlet hose clamp from the water outlet.
10. Remove the inlet hose from the water outlet.

Installation Procedure





1. Install the inlet hose to the water outlet.
2. Reposition the inlet hose clamp to the water outlet.





3. Install the inlet hose clip to the fan shroud.
4. Install the inlet hose to the radiator.
5. Reposition the inlet hose clamp to the radiator.





6. Install the radiator vent inlet hose to the radiator inlet hose clips.
7. If necessary, install the engine sight shield. Refer to Engine Sight Shield Replacement (4.8L, 5.3L, and 6.0L (RPO La4)) or Engine Sight Shield Replacement (6.0L (RPO LQ9)) in Engine - 4.8L, 5.3L, and 6.0L.





Important: Align the arrow at the throttle body end of the duct with the throttle body attaching stud.

8. Install the air cleaner outlet duct.

Notice: Refer to Fastener Notice in Service Precautions.

9. Tighten the air cleaner outlet duct clamps at the following locations:
- Throttle body
- MAF/IAT sensor
Tighten the air cleaner outlet duct clamp screws to 7 Nm (62 inch lbs.).

10. Fill the cooling system. Refer to Draining and Filling Cooling System.