Hello, I am new here so hello guys. I recently bought a 2008 Nissan titan Pro-4x with 170,000 on the clock. She a GREAT truck and I love her. Earlier today while going down the interstate I had to slam on the brakes because of morons in front of me trying to stop traffic to get over. And as I was pulling back on my base I noticed that at cruising speeds I have a sound coming from under my truck. It like a rotating sound as the truck moves forward. It something to do with the drive line, I am not a super tech I just know how to fix certain things. I don't have a lot of time to work or diagnose the problem due to A school and the Duty days we have, any ideas? Trying not to take it to a shop cause I fear ill get screwed over and have to pay a lot of money that I just don't have. As I accelerate the vibration and noise seem to disappear but at a low idle speed and just coasting down a hill the sound and vibration can be felt and heard. I think it coming from up front but I am not 100% sure. it feels like it coming from the middle of the transmission and transfer-case. ANY help guys is very much appreciated. I can maybe try to get a video for the sound tomorrow hopefully to see if that helps narrow it down.