I dont own a 05 Titan but a buddy at work does and today he asked me about a clunking noise in the rear. So i went and looked at it and told him to start it up and put it in drive and gas it a little so I could see and hear the driveshaft. Well when he did that the rear diff must have hand-grenaded. Man it sounded awful. well i guess my questions are is this a common thing with these and is Nissan taking care of it. If not then im going to replace the pinion and ring for him. Any help would be appreciated!!!