Heater Inlet Hose Replacement L61

1. Disconnect the negative battery cable.
2. Drain the coolant. Refer to Engine Coolant Check and Replacement .
3. Position the approved coolant container under the vehicle below the heater hose connections to catch any coolant that may be trapped in the lines.




Important: Green plastic rings may be found hanging on the heater pipe after hose removal. This is a manufacturing aid and should be discarded.

4. If only one hose is being serviced, open the hose assembly clamp and remove.



5. Remove the heater inlet hose from the heater core pipe by depressing the quick connect collar tab, located at 6 o'clock, and pulling the black collar toward the front of the vehicle.



6. Pull the quick connector off of the heater core pipe



7. Remove the heater outlet hose from the heater core pipe by depressing the quick connect collar tab, located at 6 o'clock, and pulling the white collar toward the front of the vehicle.
8. Pull the quick connect off of the heater core pipe.



9. Remove the heater core inlet hose to engine housing clamp and remove the hose.



10. Remove the heater core outlet hose to thermostat housing clamp and remove the hose.

Important: The heater inlet hose quick connect coupling collar is black. Heater outlet quick connect coupling collar is white.

Important: The white line on the hoses should always be installed at the 12 o'clock position.

1. Install the heater core outlet hose to thermostat housing at the rear of the engine.
2. Position the heater core inlet hose to thermostat housing clamp at the 12 o'clock position.



3. Install the heater outlet hose to thermostat housing at the left side of the housing.
4. Position the heater outlet hose to thermostat housing clamp at the 12 o'clock position.



5. Install the heater inlet quick connect to heater inlet pipe (closest to the drivers side). Holding the quick connect by the black collar, slide onto the heater pipe. When the quick connect engages the heater pipe bead, the collar will slide toward the front of the dash and lock into position.
6. Verify proper engagement of the quick connect by attempting to pull the inlet hose off of the heater pipe.
7. Install the heater core outlet quick connect to heater outlet pipe (closest to the passenger side). Holding the quick connect by the white collar, slide onto the heater pipe. When the quick connect engages the heater pipe bead, the collar will slide toward the front of the dash and lock into position.
8. Verify proper engagement of the quick connect by attempting to pull the outlet hose off of the heater pipe.



9. Install the heater hose assembly clamp, if removed.



10. Connect the negative battery cable.

Tighten
Tighten the battery terminal bolts to 17 N·m (13 lb ft).

11. Fill the cooling system. Refer to Engine Coolant Check and Replacement .

Heater Inlet Hose Replacement L81

1. Disconnect the negative battery cable.
2. Drain the coolant. Refer to Engine Coolant Check and Replacement .
3. Position the approved coolant container under the vehicle below the heater hose connections to catch any coolant that may be trapped in the heater hoses.



4. Open the heater hose assembly to the manifold clamp.




Important: Green plastic rings may be found hanging on the pipes after hose removal. These are manufacturing aids and should be discarded.

5. Remove the heater core inlet hose from the heater core pipe by depressing the quick connect collar tab, located at the 6 o'clock position, and pulling the black collar towards the front of the vehicle and then pulling the quick connect off of the heater core pipe.



6. Remove the heater core outlet hose from the heater core pipe by depressing the quick connect collar tab, located at the 6 o'clock position, and pulling the white collar toward the front of the vehicle and then pulling the quick connect off the heater core pipe.



7. Remove the return hose to engine housing clamp and remove the return hose.
8. Remove the heater core outlet hose to the engine coolant inlet housing clamp and remove the hose.



9. Remove the heater inlet hose to the coolant bridge clamp and remove the hose.

Important: The heater inlet hose quick connect coupling collar is black. The heater outlet quick disconnect coupling collar is white.

Important: The white line on the hoses should always be installed at the 12 o'clock position. Install the heater hose into the manifold clamp but do not lock the clamp.

1. Install the heater inlet hose to the coolant bridge and install the clamp at the 12 o'clock position.



2. Install the outlet hose to the engine coolant inlet and install the clamp.
3. Install the return line to the coolant bridge and install the clamp at the 2 o'clock position.



4. Install the heater core inlet quick connect to the heater inlet pipe, closer to the driver's side. Holding the quick connect by the black collar, slide onto the heater pipe. When the quick connect engages the heater core pipe bead, the collar will slide towards the front of the dash and lock into position. A green paint band will be visible when the collar is properly positioned.
5. Verify the proper engagement of the quick connect by attempting to pull the hose off of the heater pipe.
6. Install the heater core outlet quick connect to the heater outlet pipe, closest to the passenger's side. Holding the quick connect by the white collar, slide onto the heater core pipe. When the quick connect engages the heater core pipe bead, the collar will slide towards the front of the dash and lock into position. A green paint band will be visible when the collar is properly positioned.
7. Verify the proper engagement of the quick connect by attempting to pull the hose off of the heater pipe.



8. With the hoses properly positioned, close the heater hose assembly to the manifold clamp.



9. Connect the negative battery cable.

Tighten
Tighten the battery terminal bolts to 17 N·m (13 lb ft).

10. Fill the cooling system. Refer to Engine Coolant Check and Replacement .
11. Use fresh water to rinse away any coolant that was spilled during the service.