brad100 
2005 Nissan Titan Crew Cab 4dr Crew Cab XE 4WD SB (5.6L 8cyl 5A)
Nissan won't warranty Known Axle Issue.
 I took it in for brake service at about 56,000 miles and learned it had a leak in the rear axle seal on the passenger side. Nissan replaced the seal under warranty. I questioned if the axle was bad and was informed it was fine. 12,000 miles later it leaked again. This time I was informed of a Technical Bulletin stating the axle, bearing and seal should have been replaced as a unit. I complained all the way to Nissan Corporate and was informed they would not warranty it outside of the 60,000 mile warranty. Even though this was a pre existing problem and was not fixed right the first time. I will never buy another Nissan product because of this. They did not care!