The fan for a GMC, PM253 keeps the engine's temperature consistent by properly circulating the air. While the fan may seem like a simple or insignificant component of the vehicle, it is actually very important. The fan is controlled by the engine's computer or a thermostatic switch. When the temperature of the coolant rises past a specific point, the fan turns on in an effort to cool the engine. If the coolant temperature falls below a specific point, the fan shuts off.
It is important to ensure the fan for a GMC, PM253 is always maintained. Fans must be checked frequently, and drivers should always know how to identify a dangerous engine temperature level for the vehicle. When fans break or function improperly, it is imperative to replace them immediately. In some cases, the... View more switch or computer may also need attention. If the engine overheats, the extra heat has the potential to destroy the engine in a very short amount of time. Since the fan is very inexpensive in comparison with a new motor, it is in every driver's best interest to ensure that the fan is always working properly. View less
