That would really bother me... You have to be so careful when "fixing" stuff these days. I remember when you could count on the Dealer to let you know about a Safety Recall (let alone going in and buying the stuf)...
Knowledgebase - 2004 Titan Crew Cab - Nissanhelp.com
2004-2006 NISSAN TITAN, ARMADA; VOLUNTARY RECALL CAMPAIGN AIR CONDITIONER CONDENSER FAN -
The air conditioning condenser fan motor in the subject vehicles was manufactured out of specification allowing for excessive water intrusion and inadequate drainage of moisture. If enough moisture accumulates in the motor, corrosion may occur, leading to increased temperature in the motor. Because of the motor’s unique structure, this increased temperature could melt its wiring insulation and other plastic components and ultimately result in a fire. To correct the issue, Nissan will inspect, and as needed, install a thermal protector kit on the air conditioning condenser fan at no charge for parts or labor.