Removal Procedure
- Remove the instrument panel. Refer to Instrument Panel Carrier Replacement in Instrument Panel, Gages and Console.
- Drain the engine coolant. Refer to Cooling System Draining and Filling in Engine Cooling.
- Cut the outer layer of the A/C evaporator and blower module in order to access the service access cover.
- Remove the service access cover mounting screws (1).
- Remove the service access cover (2).
- Remove the blower motor resistor.
- Remove the heat/vent module mounting bolt through the blower motor resistor or service access cover opening.
- Remove the left wheel house panel. Refer to Wheelhouse Panel Replacement in Body Front End.
- Raise and support vehicle. Refer to Lifting and Jacking the Vehicle in General Information.
- Remove the front left tire. Refer to Tire and Wheel Removal and Installation in Tires and Wheels.
- On the Utility only, remove the A/C evaporator and blower module heat shield screws.
- On the Utility only, slide the A/C evaporator and blower module heat shield toward the front of the vehicle.
- Remove the 2 lower heat/vent module mounting nuts.
- On the Utility only, remove the A/C evaporator and blower module heat shield bracket.
- Remove the bottom left heat/vent module mounting bolt from inside the vehicle.
- On the Utility only, while an assistant inside the vehicle pulls the bottom right corner of the heat/vent module approximately 1 inch back, remove the 2 heat/vent module mounting studs.
- Lower the vehicle.
- Remove the heat/vent module mounting bolt located at the lower left side of the heater core to heater hose connection.
- Remove the heat/vent module mounting nut located at the lower left side of the heater core to heater connection.
- On the Utility only, loosen the heat/vent module mounting studs until the threads are free from the heat/vent module.
- Disconnect all of the electrical connectors from the heat/vent module.
- Disconnect all of the vacuum lines from the heater/vent module.
- Disconnect the heater hoses from the heater core.
- Remove the heat/vent module (2) from the vehicle.
Important: Mark and use the same mounting bolt for the heater/vent module during the installation process. Other mounting bolts are longer and will obstruct the operation of the temperature door.
Important: The heat/vent mounting stud has a flange on the inside and cannot be removed from under the hood. Stop turning the stud after the threads are off the heat/vent module.
Important: The heat/vent mounting stud has a flange on the inside and cannot be removed from under the hood. Stop turning the stud after the threads are off the heat/vent module.
Installation Procedure
- If replacing the heat/vent module, transfer the components from the old heat/vent module as necessary.
- Install the heat/vent module (2) to the vehicle.
- Connect the heater hoses to the heater core.
- Connect all of the vacuum lines to the heater/vent module.
- Connect all of the electrical connectors to the heat/vent module.
- Install the bottom right heat/vent module mounting bolt from inside the vehicle approximately halfway into the threads.
- On the Utility only, install the heat/vent module mounting stud located at the lower left side of the heater core to heater hoses connection in the engine compartment.
- Raise the vehicle.
- On the Utility only, install the bottom right heat/vent mounting studs. Ask an assistant to pull the bottom right corner of the heat/vent module back from inside the vehicle.
- On the Utility only, install the A/C evaporator and blower module heat shield bracket.
- Install the heater/vent module mounting nuts.
- On the Utility only, slide the A/C evaporator and blower module heat shield into the original position.
- On the Utility only, install the A/C evaporator and blower module heat shield screws.
- Install the left front tire. Refer to Tire and Wheel Removal and Installation in Tires and Wheels.
- Lower the vehicle.
- Install the bottom left heat/vent module mounting bolt from inside the vehicle.
- Install the left wheel house panel. Refer to Wheelhouse Panel Replacement in Body Front End.
- Install the heat/vent module mounting nut located at the lower left side of the heater core to heater connection.
- Install the heat/vent module mounting bolt located at the lower left side of the heater core to heater hose connection.
- Install the heat/vent module mounting bolt through the blower motor resistor or service access cover opening.
- On vehicles without automatic climate control, install the blower motor resistor.
- On vehicles with automatic climate control only, install the service access cover (2).
- On vehicles with automatic climate control only, install the service access cover mounting screws (1).
- Install the outer layer of the A/C evaporator and blower module.
- Seal the cut line using black weather-strip adhesive.
- Refill the engine coolant. Refer to Cooling System Draining and Filling in Engine Cooling.
- Install the instrument panel. Refer to Instrument Panel Carrier Replacement in Instrument Panel, Gages and Console.
Important: Before installing the heat/vent module to the vehicle, ensure that the heat/vent module mounting studs are located in the proper positions.
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.
Tighten
Tighten the heat/vent module mounting stud to 4.5 N·m (22 lb in).
Tighten
Tighten the heat/vent module mounting studs to 4.5 N·m
(22 lb in).
Tighten
Tighten the heat/vent module mounting nuts to 4.5 N·m (22 lb in).
Tighten
Tighten the A/C evaporator and blower module heat shield screws 2.2 N·m
(19 lb in).
Tighten
Tighten the heat/vent module mounting bolt to 4.5 N·m (22 lb in).
Tighten
Tighten the heat/vent module mounting nut to 4.5 N·m (22 lb in).
Tighten
Tighten the heat/vent module mounting bolt to 4.5 N·m (22 lb in).
Important: Use the same mounting bolt marked during removal for the heater/vent module during the installation process. Other mounting bolts are longer and will obstruct the operation of the temperature door.
Tighten
Tighten the heat/vent module mounting bolt to 4.5 N·m (22 lb in).
Tighten
Tighten the screws to 1.9 N·m (17 lb in).
Important: Do not use RTV. Apply the adhesive bead as straight as possible. Allow the adhesive to set for 15 minutes or until the adhesive becomes tacky.
