Hi All, it's been years since I have been on this forum. A little background on me. I am now on my 4th Titan owned, with an Armada also in between. I first bought a 2004 Titan XE King Cab that was bought back after the early rear diff issues. That truck was replaced with a 2005 Titan SE Crew Cab that i eventually traded for a 2007 Armada SE. I missed having a truck so I went back a couple years later and picked up a 2008 Titan LE Cew Cab. After a few years I wanted to try something different and purchased a 2014 Tundra 1794 Crew Cab. The Tundra was nothing but a pain and plagued with issues so I decided to go back to a 2017 Titan XD Platinum Reserve with the Cummins. About a weeks ago it developed an audible knock that started at start up and started getting worse. No warning lights, oil pressure and level was good. Took to dealer and the verified engine long block needs replaced. They are not sure why until cummins digs into it once they get it back. So much for waiting on a 2nd year to get the "bugs" worked out! ?