Rear HVAC Housing Removal

REMOVAL

WARNING: Refer to the applicable warnings and cautions for this system before performing the following operation Warning and Caution. Failure to follow the warnings and cautions may result in serious or fatal injury.

NOTE: The rear heater-A/C housing must be removed from the vehicle for service of the mode door actuator, blend door actuator, blower motor and blower motor resistor and, it must be disassembled for service of the A/C evaporator, heater core, mode-air door and blend-air door.





NOTE: Illustration shown with rear body cradle removed for clarity.

1. Disconnect and isolate the negative battery cable.
2. Recover the refrigerant from the refrigerant systemRefrigerant System Recovery.
3. Drain the engine cooling systemService and Repair.
4. Raise and support the vehicle. Vehicle Lifting
5. Remove the nut (1) that secures the underbody refrigerant extension lines (3) and the sealing plate (4) to the rear A/C expansion valve (1) which extends through the floor panel behind the right rear wheel housing.
6. Disconnect the underbody refrigerant extension lines from the rear A/C expansion valve and remove and discard the O-ring seals.
7. Install plugs in, or tape over the opened underbody refrigerant line fittings and rear expansion valve ports.




CAUTION: DO NOT apply excessive force on underbody heater lines or rear heater hose quick connect fittings when disconnecting the connections. Excessive force may damage or deform the fittings and or lines, causing an engine coolant leak.

8. Disconnect the underbody heater lines (4) from the rear heater core tubes (1) which extend through the rear floor panel in front of the right rear wheel housing by releasing the insert (2) in each rear quick connect fitting (3) and carefully pulling downward on the fittings while using a slight twisting motion.
9. Lower the underbody heater lines and drain any residual coolant from the lines into a suitable container.




10. Lower the vehicle.
11. Remove right rear quarter trim panelQuarter Trim Panel - Removal.
12. Remove the metal support strap from the rear quarter panel and floor.
13. Remove the rear floor distribution ductRear Floor Distribution Ducts - Removal.
14. Remove the rear ceiling distribution ductsRear Ceiling Distribution Ducts - Removal.
15. Disconnect the body wire harness from the rear heater-A/C wire harness connector (6).
16. Remove the two nuts (2) that secure the rear heater core tubes (8) to the floor panel (9).
17. Remove the bolt (7) that secures the rear heater core tubes to the right inner quarter panel (1).
18. Remove the two bolts (5) that secure the rear heater-A/C housing (4) to the two metal brackets (3) located on the rear inner quarter panel and remove the housing.