Chevrolet Impala A/C and heat not working, fan intermittently operates on Chevrolet Impala

Some Chevrolet Impala owners report experiencing issues with their A/C and heat not functioning properly, accompanied by intermittent fan operation. These problems may stem from a blower fan that is not working effectively, leading to reduced cooling performance and airflow, which complicates temperature regulation inside the vehicle. Common causes for the AC fan blower motor malfunction include blown fuses, bad relays, resistor or control module failures, faulty blower motors, bad electrical connectors, broken wires, or defects in the climate control unit. Additionally, some owners find that intermittent fan operation can be linked to a faulty ignition switch or ignition switch relay. In certain cases, even after replacing the blower speed control resistor, the blower motor may still fail to operate, indicating a more complex issue that requires further investigation. Given the blower motor's critical role in the HVAC system, it is essential for owners to check these components to effectively diagnose and resolve the problem.