HVAC Housing

WARNING: This page is about a different car, the 2012 RAM Pickup and 2012 RAM Cab & Chassis. However, it is still accessible from the selected car via links, so may be relevant.

NOTE:

The HVAC housing must be removed from the vehicle and disassembled for service of the A/C evaporator and the mode and blend-air doors.

Fig 1: HVAC Wiring Harness

Courtesy of CHRYSLER GROUP, LLC

Remove the HVAC housing and place it on a workbench. Refer to HOUSING, HVAC, REMOVAL .
Disconnect the HVAC wiring harness (1) from the recirculation door actuator (2), power module or blower resister (3) (depending on application) and the blower motor (4).
Disengage the HVAC wiring harness from the two retaining clips (5) and position the harness out of the way.

Fig 2: Foam Seal
Courtesy of CHRYSLER GROUP, LLC

NOTE:
If the foam seal is deformed or damaged, the seal must be replaced.
Remove the foam seal (1) from the front of the HVAC housing (2).
If required, remove the two bolts (4) that secure the A/C expansion valve (5) to the evaporator tube tapping block (3) and remove the valve.

Fig 3: Blower Motor & Evaporator Housing
Courtesy of CHRYSLER GROUP, LLC
Remove the three screws (2 and 5) that secure the blower motor and evaporator housing (6) to the HVAC housing (3).
Carefully disengage the nine retaining tabs (1 and 4) that secure the blower motor and evaporator housing the HVAC housing.
Carefully separate the blower motor and evaporator housing from the HVAC housing

Fig 4: A/C Evaporator & Housing
Courtesy of CHRYSLER GROUP, LLC

NOTE:
If the foam insulator around the A/C evaporator is deformed or damaged, the insulator must be replaced.
If required, remove the A/C evaporator (1) from the blower motor and evaporator housing (2).
If the A/C evaporator is going to be reused, remove and discard the O-ring seals from the evaporator fittings and install plugs into, or tape over the evaporator ports.

Fig 5: Blend Door Actuator (Dual Zone Passenger Side)
Courtesy of CHRYSLER GROUP, LLC
If equipped with dual zone system, disconnect the HVAC wire harness connector (2) and remove the two screws (4) that secure the blend door actuator (3) to the front of the HVAC housing (1) and remove the actuator.

Fig 6: HVAC Housing Seal
Courtesy of CHRYSLER GROUP, LLC

NOTE:
If the foam seal is deformed or damaged, the seal must be replaced.
Remove the seal (1) from the flange (2) at the front of the HVAC housing.

Fig 7: HVAC Housing Flange
Courtesy of CHRYSLER GROUP, LLC
Remove the two screws (3) that secure the flange (1) to the front of the HVAC housing (2).
Carefully disengage the retaining tab that secures the flange to the HVAC housing and remove the flange.
NOTE:
If the foam insulator around the A/C evaporator is deformed or damaged, the insulator must be replaced.
Carefully pull the heater core (4) out of the HVAC housing.
Inspect all foam seals and replace as required.

Fig 8: HVAC Wire Harness To Evaporator Temperature Sensor, Blend Door Actuator & Mode Door Actuators
Courtesy of CHRYSLER GROUP, LLC
Disconnect the HVAC wire harness (1) from the evaporator temperature sensor (2), blend door actuator (3) and mode door actuators (4 and 6).
Remove the HVAC wire harness from the HVAC housing (5).
Remove the evaporator temperature sensor from the HVAC housing.
Remove the screws that secure the blend and mode door actuators to the HVAC housing and remove the actuators.

Fig 9: HVAC Housing Parting Line
Courtesy of CHRYSLER GROUP, LLC

NOTE:
If the foam seals on top of the HVAC housing are deformed or damaged, they must be replaced.
Carefully cut the foam seals (1) along the parting line (5) of the two halves of the HVAC housing (2 and 4).
Release the fourteen retaining tabs (3) that secure the two halves of the HVAC housing together and carefully separate the housing.

Fig 10: Mode Air Doors
Courtesy of CHRYSLER GROUP, LLC
Carefully disengage the mode air doors (1 and 2) from the actuator couplers (5) by pulling the doors straight upward.
NOTE:
If a seal on an air door is deformed or damaged, the air door must be replaced.
Remove the mode air doors and the center partition (3), if equipped, from the rear half of the HVAC housing (4).

Fig 11: Blend Air Doors
Courtesy of CHRYSLER GROUP, LLC

NOTE:
Dual zone system with two blend doors shown in illustration. Single zone system with one blend door similar.
Carefully disengage the blend air door(s) (2), as equipped, from the actuator coupler(s) (3) by pulling the door(s) straight upward.
NOTE:
If a seal on an air door is deformed or damaged, the air door must be replaced.
Remove the blend air door(s) from the HVAC housing (1).

Fig 12: Actuator Coupler
Courtesy of CHRYSLER GROUP, LLC

NOTE:
Typical actuator coupler shown in illustration.
Remove the actuator coupler(s) (1) from the HVAC housing (2), as required. Carefully release the three retaining tabs (3) on each actuator coupler from the inside surface of the HVAC housing and push the coupler(s) out of the housing.