+1, most likely that was it. It's quite loud, even inside the truck, when it comes on. Outside it's just crazy loud. That little fan pulls a lot of air!
2010 Frontier Crew Cab SE V6, 4x2, Auto, Value Truck Package - Super Black / Steel
Axle vent mod, de-badged tailgate, OEM engine skid plate, OEM style fogs
, OEM camber bolts, trailer wiring harness in bumper, OEM tow hook, Autodimming compass mirror, OEM splash guards, black Plastidipped grille, OEM bug shield
JVC KD-X50BT head unit, Pioneer TS-T110 dash, Kicker DS693 front doors, Kicker DS65 rear doors
Daystar 2" spacers, Calmini 1.5" shackles, and 265/75R16 tires!!!