A: To remove the air conditioning system, begin by discharging it and draining the cooling system. Remove the HVAC module assembly and unscrew the halves. Next, take out the mounting screws for the evaporator temperature sensor control module and set it aside. Separate the housing halves and carefully remove the evaporator core, being cautious not to damage the seal. For installation, if a new evaporator core is being used, add 2 oz. of refrigerant oil to it. Then, follow the reverse steps of the removal process. Finally, refill the cooling system and have the system evacuated, recharged, and leak tested.