Searched hi and low and found nothing on this subject. My interior fan has gotten extremely loud for the second time. The first time it was covered under warranty, this time it won't be. Has anyone ran into this problem with their Titan yet? The humming is so loud that when the fan is on hi and recirculate, you can't even even hold a comfortable conversation. Somewhere I can get a new one that is not through nissan (doubt it, just thought I would ask).