Heater Outlet Hose Replacement 2.2L

Tools Required

J 38185 Hose Clamp Pliers

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



2. Release the outlet heater hose clamp using the J 38185 at the heater core.
3. Remove the outlet heater hose from the heater core.



4. Release the heater outlet hose clamp using the J 38185 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.

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.




Notice: Use the correct fastener in the correct location. Replacement fasteners must be the correct part number for that application. Fasteners requiring replacement or fasteners requiring the use of thread locking compound or sealant are identified in the service procedure. Do not use paints, lubricants, or corrosion inhibitors on fasteners or fastener joint surfaces unless specified. These coatings affect fastener torque and joint clamping force and may damage the fastener. Use the correct tightening sequence and specifications when installing fasteners in order to avoid damage to parts and systems.

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 using the J 38185 at the water pump.



6. Install the heater inlet hose to the engine water outlet adapter pipe.
7. Install the heater inlet hose clamp using the J 38185 at the engine water outlet adapter pipe.



8. Install the outlet heater hose to the heater core.
9. Install the outlet heater hose clamp using the J 38185 at the heater core.
10. Fill the engine cooling system. Refer to Cooling System Draining and Filling in Engine Cooling.

Heater Outlet Hose Replacement 4.3L

Tools Required

J 38185 Hose Clamp Pliers

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



2. Release the outlet heater hose clamp using the J 38185 at the heater core.
3. Remove the outlet heater hose from the heater core.



4. Release the heater inlet hose clamp using the J 38185 at the intake manifold fitting.
5. Remove the heater inlet hose from the intake manifold fitting.
6. Release the heater outlet hose clamp using the J 38185 at the water pump.
7. Remove the heater outlet hose from the water pump.



8. Remove the heater outlet hose from the retaining clip at the engine water outlet.



9. Open the outlet heater hose retaining clip above the right side valve cover. Use a flat bladed tool to open the clip from the bottom.
10. Remove the outlet heater hose from the vehicle.

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.



3. Install the heater outlet hose to the water pump.
4. Install the heater outlet hose clamp using the J 38185 at the water pump.
5. Install the heater inlet hose to the intake manifold fitting.
6. Install the heater inlet hose clamp using the J 38185 at the intake manifold fitting.



7. Install the outlet heater hose to the heater core.
8. Install the outlet heater hose clamp using the J 38185 at the heater core.



9. Install the heater outlet hose to the retaining clip at the engine water outlet.



10. Place the outlet heater hose in the retaining clip above the right side valve cover.
11. Close the retaining clip. Ensure that the clip locks.
12. Fill the engine cooling system. Refer to Cooling System Draining and Filling in Engine Cooling.