Not sure if this is a fan, blower or something else. Inconsistent squeak/squeal sound made when fan or blower are running or increased for heat; not sure about AC yet. Have taken in to dealership when had vehicle for 1-2 weeks. Told the fan was replaced, although part needed to be ordered. Sound still exist but not consistent. Complained to Service Mgr. Service Mgr said they have to catch it when it is making the sound! Hard to catch a inconsistent sound when you are paying for vehicle monthly and it has an extended warranty!