Heater Inlet Hose Replacement

Heater Inlet Hose Replacement (LS4) (5.3L)

Tools Required

J 38185 Hose Clamp Pliers

Removal Procedure

1. Drain the cooling system. Refer to Cooling System Draining and Filling (L26 Static Fill) (Service and Repair)Cooling System Draining and Filling (LS4 Static Fill) (Service and Repair)Cooling System Draining and Filling (L26 GE 47716 Fill) (Service and Repair)Cooling System Draining and Filling (LS4 GE 47716 Fill) (Service and Repair).




2. Use J 38185 to reposition the heater inlet hose clamp at the heater pipe.

Important: Cap or plug the cooling components to prevent system contamination.


3. Remove the heater inlet hose (1) from the heater pipe.




4. Use J 38185 to reposition the heater inlet hose clamp at the heater core.
5. Remove the heater inlet hose (1) from the heater core.

Installation Procedure




1. Connect heater inlet hose (1) to the heater core.
2. Use J 38185 to reposition the heater inlet hose to the heater core clamp.




3. Install the heater inlet hose (1) to the heater pipe.
4. Use J 38185 to reposition the heater inlet hose to the heater pipe clamp.
5. Fill the cooling system. Refer to Cooling System Draining and Filling (L26 Static Fill) (Service and Repair)Cooling System Draining and Filling (LS4 Static Fill) (Service and Repair)Cooling System Draining and Filling (L26 GE 47716 Fill) (Service and Repair)Cooling System Draining and Filling (LS4 GE 47716 Fill) (Service and Repair).