Spoke with the servicing manager yesterday. Apparently they are still waiting for the Chrysler/Jeep regional manager to drop in so they can show him the problem. Interestingly he admitted that since my complaint their mechanic had test driven other similiar models which were in for work only to find that everyone of them so far has the same noise to varying degrees. Have asked him to see if he can speed up their research as the noise is starting to drive me mad. Some other websites suggest that it may also be the rear stabilizer bar. It is getting to the stage that I will go to a suspension expert and if necessary fix the thing myself and send the bill to Chrysler. If it is the shocks the Aussie equivalent can't be too expensive. Haven't written to Chrysler yet but will definitely do so if there is no result shortly. The battle continues