Buick Lucerne heater core replacement issue on Buick Lucerne

Some Buick Lucerne owners report experiencing issues related to heater core replacement, such as a lack of heat output when the heater is turned on, which may indicate a faulty heater core. These owners have noted that if only cold air is blowing from the vents, the heater core might not be functioning properly. Additionally, some have encountered airflow issues, where no air is emitted from the vents, often linked to problems with the fan or blower motor, including blown fuses or faulty components. When attempting to replace the heater core, some owners find that both hoses need to be removed, and they recommend using worm drive clamps to avoid complications. Furthermore, discrepancies in air temperature on different sides of the dashboard could stem from a faulty Temp Door Actuator rather than a clogged heater core. Accurate diagnosis and adherence to proper replacement procedures are crucial for ensuring effective heating in the Buick Lucerne.