Heater Inlet Pipe Replacement

Heater Inlet Pipe Replacement (LNJ) (3.4L)

Removal Procedure

1. Remove the fuel injector sight shield. Refer to Fuel Injector Sight Shield Replacement (Service and Repair).
2. Drain the cooling system. Refer to Cooling System Draining and Filling (LY7 GE 47716 Fill) (Service and Repair)Cooling System Draining and Filling (LNJ GE 47716 Fill) (Service and Repair)Cooling System Draining and Filling (LNJ Static Fill) (Service and Repair)Cooling System Draining and Filling (LY7 Static Fill) (Service and Repair).




3. Release and slide the heater core inlet hose clamp away from the heater inlet pipe connection.
4. Disconnect the heater core inlet hose from the heater inlet pipe.




5. Remove the heater inlet pipe nut (2).
6. Remove the heater inlet pipe (1).
7. Remove the seal (3) from the heater inlet pipe (1).

Installation Procedure

1. Install a new seal (3) to the heater inlet pipe (1).
2. Apply engine coolant to the heater inlet pipe seal (3).




3. Install the heater outlet pipe (1).

Caution: Refer to Fastener Caution (Fastener Caution).

4. Install the heater inlet pipe nut (2) and tighten to 25 Nm (18 lb ft).




5. Connect the heater core inlet hose to the heater inlet pipe.
6. Position the heater core inlet hose clamp over the heater inlet pipe connection.
7. Fill the cooling system. Refer to Cooling System Draining and Filling (LY7 GE 47716 Fill) (Service and Repair)Cooling System Draining and Filling (LNJ GE 47716 Fill) (Service and Repair)Cooling System Draining and Filling (LNJ Static Fill) (Service and Repair)Cooling System Draining and Filling (LY7 Static Fill) (Service and Repair).
8. Install the fuel injector sight shield. Refer to Fuel Injector Sight Shield Replacement (Service and Repair).