Heater Hose Replacement - Outlet

REMOVAL PROCEDURE




1. Drain the engine coolant. Refer to Draining and Filling Cooling System in Cooling System.
2. Release the outlet heater hose clamp at the heater core.
3. Remove the outlet heater hose from the heater core.




4. Release the heater outlet hose clamp at the water pump.
5. Remove the heater outlet hose from the water pump.




6. Remove the heater outlet hose bracket bolt.
7. Remove the outlet heater hose from the vehicle.

INSTALLATION PROCEDURE




1. Apply lubricant (GM P/N 9985662) to each end of the outlet heater hose.

IMPORTANT: When installing new outlet heater hose, place the clamp on the hose before installing the hose to the vehicle.

2. Install the outlet heater hose to the vehicle.

NOTE: Refer to Fastener Notice in Service Precautions.

3. Install the heater outlet hose bracket bolt.

Tighten
Tighten the bolt to 25 N.m (18 lb ft).




4. Install the heater outlet hose to the water pump.
5. Install the heater outlet hose clamp at the water pump.




6. Install the heater inlet hose to the engine water outlet adapter pipe.
7. Install the heater inlet hose clamp at the engine water outlet adapter pipe.




8. Install the outlet heater hose to the heater core.
9. Install the outlet heater hose clamp at the heater core.
10. Fill the Cooling System. Refer to Draining and Filling Cooling System in Cooling System.