Grand Cherokee 2WD V6-3.7L (2008)
Heater Core: Description and Operation
Operation
OPERATION
Engine coolant is circulated through the heater hoses to the heater core at all times. As the coolant flows through the heater core, heat is removed from
the engine and is transferred to the heater core tubes and fins. Air directed through the heater core picks up the heat from the heater core fins. The
blend-air door(s) allows control of the heater output air temperature by regulating the amount of air flowing through the heater core. The blower motor
speed controls the volume of air flowing through the HVAC housing.
The heater core cannot be repaired and must be replaced if restricted, leaking or damaged.
