Buick Terraza engine overheating issue after 3 hours of driving despite thermostat and radiator hose replacement on Buick Terraza

Some Buick Terraza owners report experiencing engine overheating issues after extended driving, even after replacing the thermostat and radiator hose. These problems may stem from a clogged radiator that hinders coolant flow, a leaking head gasket affecting combustion and coolant circulation, or a faulty radiator fan that fails to cool the radiator effectively. Additionally, insufficient coolant levels can lead to inadequate cooling, while air trapped in the cooling system can impede proper coolant circulation. Some owners also report that a worn-out thermostat may not regulate coolant flow effectively, further impacting engine temperature control. It is recommended for owners facing these issues to conduct thorough diagnostics to identify the exact cause and implement necessary repairs.