I just wanted to start a new thread so everybody could read that nissan has no way to fix high/low speed vibration's that is coming from some of our trucks. My dealer has tried the tires and the leafspring shims per the Tech line then today after calling the tech line again my dealer was advised to replace all the tire's and give it back to me rather its fix or not. So anyways im going to talk to the nissan rep tomorrow and see about a buy back (not that im think thats going to happen that easy). Sense i know they can't fix it and as of right now all i have to do is to take it in 3 more times for the AZ lemon law to kick in. I really dont see what kind of arguement they would have not to just buy it back sense they are telling me they can't fix it.. I was hoping that they would be able to fix my problem but i guess not... All i can say is WOW over 30k and they don't know how to fix a known problem... Also as far as i know they never did look into the D/W coming from the front end...