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There is a TSB for the rear differential noises but it's not a recall. The TSB outlines a service and parts procedure to repair the problem. Some dealers can do a goodwill repair in which they will cover some of the repair under warranty and some you will have to pay for. Since you are out of warranty for 1 year and 8,000 miles they may or may not do the good will.
I was afraid that was going to be the answer. Thanks for the help.
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