Pontiac G5 coolant fan stays on after ignition is turned off, requires fuse removal to shut off on Pontiac G5

Some Pontiac G5 owners report experiencing issues with the coolant fan continuing to run even after the ignition is turned off, which may indicate underlying problems that require attention. Common causes for this issue include a malfunctioning thermostat, a clogged radiator, a failing water pump, or complications with the A/C system. Additionally, electrical problems such as faulty wiring, a defective temperature sensor, or a malfunctioning relay switch could also be responsible for the fan's persistent operation. Low coolant levels are often cited as a significant reason for the fan not shutting off, as insufficient coolant can prolong engine cooling times. To resolve this issue, owners are advised to troubleshoot the engine fan, check coolant levels for adequacy, and inspect for leaks. In some cases, such as with a 2008 Pontiac Torrent, mechanics have linked the fan's behavior to more serious issues like a head gasket problem or normal wear and tear. While temporarily removing the fuse can stop the fan, it is crucial to address the root cause to avoid potential damage to the engine or cooling system.