Heater Hose Assembly Replacement 3.8 L

1. Drain the engine coolant. Refer to Cooling System Draining and Filling in Engine Cooling.

Notice: Remove the heater hose quick connect fittings by hand. Do not attempt to pry the quick connect fittings from the drive belt tensioner. Prying the quick connect fittings may damage the quick connect fittings.




2. Disconnect the heater hose quick connect fittings from the drive belt tensioner.
3. Discard the O-rings.



4. Remove the bolt attaching the inlet and outlet heater hose bracket from the mid rail.




Notice: Do not apply excessive force on the heater core pipes during hose removal. Applying excessive force on the heater core pipes may damage the heater core pipes.

5. Remove the inlet and outlet heater hoses from the heater core.
6. Remove the inlet heater hose from the frame rail clip.
7. Remove the inlet and outlet heater hoses from the vehicle.

1. Install the inlet and outlet heater hoses to the vehicle.
2. Install the inlet heater hose to the frame rail clip.



3. Install the inlet and outlet heater hoses to the heater core.

Notice: Refer to Fastener Notice in the Preface section.




4. Install the bolt attaching the inlet and outlet heater hose bracket to the mid rail.

Tighten
Tighten the heater hose bracket bolt to 14 N·m (10 lb ft).




5. Install the O-rings to the quick connect fittings.

Snap the quick connect fittings to the drive belt tensioner.

6. Pull back on the heater hose quick connect fittings in order to verify proper connector engagement.
7. Fill the cooling system. Refer to Cooling System Draining and Filling in Engine Cooling.

Heater Hose Assembly Replacement 5.7L

1. Drain the engine coolant. Refer to Cooling System Draining and Filling in Engine Cooling.



2. Remove the inlet and outlet heater hoses from the water pump.



3. Remove the bolt attaching the inlet and outlet heater hose bracket from the mid rail.




Notice: Do not apply excessive force on the heater core pipes during hose removal. Applying excessive force on the heater core pipes may damage the heater core pipes.

4. Remove the inlet and outlet heater hoses from the heater core.
5. Remove the inlet heater hose from the frame rail clip.
6. Remove the inlet and outlet heater hoses from the vehicle.

1. Install the inlet and outlet heater hoses to the vehicle.
2. Install the inlet heater hose to the frame rail clip.



3. Install the inlet and outlet heater hoses to the heater core.

Notice: Refer to Fastener Notice in the Preface section.




4. Install the bolt attaching the inlet and outlet heater hose bracket to the mid rail.

Tighten
Tighten the heater hose bracket bolt to 14 N·m (10 lb ft).




5. Install the inlet and outlet heater hoses to the water pump.
6. Fill the cooling system. Refer to Cooling System Draining and Filling in Engine Cooling.