Heater Outlet Hose Replacement 6.6L - with Bypass Valve

Special Tools

J 38185 Hose Clamp Pliers

Removal Procedure

1. Drain the engine coolant. Refer to Cooling System Draining and Filling.
2. Remove the upper fan shroud. Refer to Engine Coolant Fan Upper Shroud Replacement.
3. Remove the accumulator. Refer to Air Conditioning Accumulator Replacement



4. Reposition the heater hose clamps using the J 38185 .
5. Remove the outlet heater hose from the outlet radiator hose connection.



6. Reposition the heater hose clamp using the J 38185 .
7. Remove the outlet heater hose (2) from the coolant bypass valve.

Installation Procedure

1. Install the outlet heater hose (2) to the coolant bypass valve.
2. Reposition the heater hose clamp using the J 38185 .
3. Lower the vehicle.



4. Install the outlet heater hose to the outlet radiator hose connection.
5. Reposition the heater hose clamp using the J 38185 .
6. Install the accumulator. Refer to Air Conditioning Accumulator Replacement
7. Fill the engine coolant. Refer to Cooling System Draining and Filling.
8. Install the upper fan shroud. Refer to Engine Coolant Fan Upper Shroud Replacement.

Heater Outlet Hose Replacement 4.3L

Callout	Component Name
Preliminary Procedures Partially drain the cooling system. Refer to Cooling System Draining and Filling . Remove the air cleaner assembly. Refer to Air Cleaner Assembly Replacement .
1	Heater Outlet Hose Clamp (Qty:2)
2	Heater Outlet Hose

Heater Outlet Hose Replacement 4.8L, 5.3L, 6.0L

Callout	Component Name
Preliminary Procedures Partially drain the cooling system. Refer to Cooling System Draining and Filling . Remove the air cleaner assembly. Refer to Air Cleaner Assembly Replacement .
1	Heater Outlet Hose Clamp (Qty:2)
2	Heater Outlet Hose

Heater Outlet Hose Replacement 4.3L-C60-Engine to Valve

Callout	Component Name
Preliminary Procedures Partially drain the cooling system. Refer to Cooling System Draining and Filling . Remove the air cleaner assembly. Refer to Air Cleaner Assembly Replacement .
1	Heater Outlet Hose Clamp (Qty:2)
2	Heater Outlet Hose

Heater Outlet Hose Replacement 6.6L- without Bypass Valve

Callout	Component Name
Preliminary Procedure Drain the cooling system. Refer to Cooling System Draining and Filling. Remove the air cleaner assembly. Refer to Air Cleaner Assembly Replacement. Remove the upper fan shroud. Refer to Engine Coolant Fan Upper Shroud Replacement. Remove the accumulator. Refer to Air Conditioning Accumulator Replacement.
1	Heater Outlet Hose Clamp (Qty: 2) Procedure Using J 38185 Hose Clamp Pliers to reposition the heater hose clamps. Special Tools J 38185 Hose Clamp Pliers
2	Heater Outlet Hose