ACDelco GM Original Equipment A/C Evaporator Core and Case Assemblies include an evaporator and case and are GM-recommended replacements for your vehicle’s original components. A/C evaporator cores are heat exchangers located in the HVAC housing, where they cool and dehumidify the cabin air. These evaporators feature aluminum channel-plate construction for durable, lightweight performance while maintaining efficiency and resistance to corrosion. This original equipment A/C evaporator core and case assembly has been manufactured to fit your GM vehicle, providing the same performance, durability, and service life you expect from General Motors.