Rear Heater Core

Rear Heater Core

Description






The rear heater core (1) is a heat exchanger made of rows of tubes and fins. The rear heater core is located in the rear HVAC housing behind the right interior quarter trim panel and is retained in the housing by a plastic mounting bracket and a screw. The heater core tubes (3) are attached to the heater core tank (5) by metal retaining clamps (2) and rubber O-ring seals and are secured to the rear HVAC housing by a plastic flange (4).

The heater core tubes are not serviced separately from the rear heater core. The rear HVAC housing must be removed from the vehicle to service the rear heater core.

Operation

Engine coolant is circulated through heater hoses and tubes to the rear heater core at all times. As the coolant flows through the heater core, heat removed from the engine is transferred to the heater core fins and the air directed through the heater core picks up the heat from the fins. The rear blend-air door allows control of the rear heater output air temperature by controlling the amount of air flowing through or around the rear heater core. The rear blower motor speed controls the volume of air flowing through the rear HVAC housing.

The rear heater core cannot be repaired and must be replaced if inoperative, leaking or damaged.