Chevrolet Impala temperature gauge issue persists after water pump and thermostat replacement and radiator flush on Chevrolet Impala

Some Chevrolet Impala owners report experiencing persistent temperature gauge issues even after replacing the water pump, thermostat, and flushing the radiator. These problems may be attributed to a clogged radiator that impedes coolant flow, leading to overheating. Additionally, a leaking head gasket can negatively impact the combustion process and coolant circulation, further exacerbating overheating concerns. Insufficient coolant levels may also result in inadequate heat dissipation, causing the engine to overheat. Furthermore, a faulty radiator fan may fail to cool the radiator effectively, and trapped air in the cooling system can hinder proper coolant circulation. Even with a new thermostat, some owners find that a defective unit can still cause temperature regulation problems. It is recommended that owners thoroughly inspect these components to identify the root cause and implement necessary corrective actions.