Housing Assembly HVAC: Service and Repair

Heater/Vent Module Replacement

Removal Procedure

1. Drain the coolant. Refer to Cooling System Draining and Filling Cooling System Draining and Filling in Engine Cooling.
2. Remove the instrument panel storage compartment. Refer to Instrument Panel Carrier Replacement Service and Repair in Instrument Panel, Gages, and Console.
3. Disconnect the electrical connectors as necessary.
4. Remove the center floor air distribution duct.
5. Remove the hinge pillar trim panels. Refer to Body Hinge Pillar Trim Panel Replacement Service and Repair in Interior Trim.
6. Remove the blower motor cover.
7. Remove the blower motor. Refer to Blower Motor Replacement Blower Motor Replacement.
8. Roll back the instrument panel.
9. Remove the coolant recovery reservoir. Refer to Coolant Recovery Reservoir Replacement (L-18) Coolant Recovery Reservoir Replacement (L-18) in Engine Cooling.
10. Remove the heater hoses. Refer to the following procedures:

* Heater Inlet Hose Replacement (L18) Heater Inlet Hose Replacement (L18)Heater Inlet Hose Replacement (LG5) Heater Inlet Hose Replacement (LG5)
* Heater Outlet Hose Replacement (L18) Heater Outlet Hose Replacement (L18)Heater Outlet Hose Replacement (LG5) Heater Outlet Hose Replacement (LG5)




11. While holding the HVAC module to the cowl, remove the screw on the interior side of the cowl, near the evaporator pipe, if equipped.




12. On the engine side of the cowl, remove the 4 screws that hold the HVAC module to the cowl.
13. On the engine side of the cowl, remove the 2 nuts that hold the HVAC module to the cowl.
14. Remove the HVAC module.

Installation Procedure

1. Install the HVAC module.




2. On the engine side of the cowl, install the nuts that hold the HVAC module to the cowl.
3. On the engine side of the cowl, install the 4 screws that hold the HVAC module to the cowl.




4. On the interior side of the cowl, install the screw.

Notice: Refer to Fastener Notice in Cautions and Notices.

5. Tighten the following fasteners:

* Tighten the screws on the engine side of the cowl to 1.9 Nm (17 lb in).
* Tighten the two nuts to 2.8 Nm (25 lb in).
* Tighten the screw on the interior side of the cowl to 11 Nm (97 lb in).

6. Install the heater hoses. Refer to the following procedures:

* Heater Inlet Hose Replacement (L18) Heater Inlet Hose Replacement (L18)Heater Inlet Hose Replacement (LG5) Heater Inlet Hose Replacement (LG5)
* Heater Outlet Hose Replacement (L18) Heater Outlet Hose Replacement (L18)Heater Outlet Hose Replacement (LG5) Heater Outlet Hose Replacement (LG5)

7. Install the coolant recovery reservoir. Refer to Coolant Recovery Reservoir Replacement (L-18) Coolant Recovery Reservoir Replacement (L-18) in Engine Cooling.
8. Roll forward the instrument panel.
9. Install the blower motor. Refer to Blower Motor Replacement Blower Motor Replacement.
10. Install the blower motor cover.
11. Install the hinge pillar trim panels. Refer to Body Hinge Pillar Trim Panel Replacement Service and Repair in Interior Trim.
12. Install the center floor air distribution duct.
13. Connect the electrical connectors as necessary.
14. Install the instrument panel storage compartment. Refer to Instrument Panel Carrier Replacement Service and Repair in Instrument Panel, Gages, and Console.
15. Add the engine coolant. Refer to Cooling System Draining and Filling Cooling System Draining and Filling in Engine Cooling.
16. Inspect the system for leaks.