I have the same clunking noise problem (low speeds over bumbs, turns) with my 08 Titan CrewMax SE. First at 1700, 3800, 5500, and now at 7564. They replaced the power steering rack 3 times already with the third ordered from a different supplier from another part of the country to see if that resolved it. Now, this is the 4th time the noise has reoccured and I filed a report with Consumer Affairs (CA)(which btw, moves at glacier speed). The noise is progressively getting worse and it is making me feel very unsafe. It has taken CA 2 weeks and they still have not gotten copies of the related paper work from the dealership service department. For crying out load, the space shuttle can go up and come back in less than 2 weeks so I'm not sure why it's taking them so long. I am in the process of escalating the issue up the chain as high as it takes to get someone responsive on the case. Next steps will be to weigh Nissan's proposed options and if unacceptable, proceed with arbitration or lawyer who specializes in the lemon law. If Nissan does not take this seriously and they continue to delay, I will consider going to the press and do everything in my power to negatively impact sales. At this point of frustration and safety concern, I just want a full refund/buy back including coverage for expenses such as extended warranty payments etc. I will keep those who are interested posted on how things evolve. Designers/engineers at Nissan corporate seem to have fallen asleep at the wheel (literally) since this appears to be the last model in this generation. Not good for future sales at all. No wonder Tundra is making a big splash.
Update 1/1/08: Hi, the latest is that Nissan Consumer Affairs decided not to do anything in advance of and to pre-empt arbitration. Additionally, at the time my truck had only been in for the 3rd time. So I brought the truck in for a 4th attempt and the service manager said there was nothing they could do because there was no technical resolution coming from the regional tech specialist. I also had a humming/rubbing sound coming from the wheels/steering when first starting the truck, but it tends to disappear after warming up and driving for a while (30+ minutes). Not sure if this is related to the power steering rack issue. They were not able to fix becuase they could not recreate the noise at the time. I am now working with the Dealership GM who indicated that he will try and work out a buy back/trade assist transaction with Consumer Affairs before I pursue arbitration. It may take a few weeks because of the holidays before I see any movement. If nothing comes through favorably, then I have to pursue BBB arbitration (autoline) by NC law. I am also in th process of seeking a lawyer who specializes in lemon law. I will update the threads with this info.