One problem related to transmission not go into gear has been reported for the 2006 Nissan Titan. The most recently reported issues are listed below. Please also check out the statistics and reliability analysis of the 2006 Nissan Titan based on all problems reported for the 2006 Titan.
While traveling at 80 mph I felt an odd shake on my Titan. I exited the freeway and got out of the vehicle. The rear driver side was smoking. I noticed gear oil leaking out all over the brakes and tire. I ended up needing to replace the axle, seal,bearing,backing plate and abs sensor. $1300. 00 and 3 days later it is back in the shop. Leaking gear oil from the same place. Waiting to hear from mechanic what I need to do next.