I took mine into the dealership last week for the serpentine belt squealing. The Service Mgr. @ Bankston Dodge in Irving,TX told me that the tensioner pulley was bad and they ordered a new one. Then 2days later they said that the new one was a completely different size than the one that was on the truck and the mounting hardware was different and they needed to order a bolt to mount it. 2 more days later they said that the harmonic balancer was bad and that the original tensioner pulley was fine and they had to order a new harmonic balancer. Finally, I picked it up yesterday and was told that the Harmonic balancer had backed off some and had caused the belt to be off-line from the other pulley's and so they just retightened it and put a new belt on. The truck has 10k miles on it and I have never heard of this happening to anyone else. Please let me know what your thoughts are and if I should be worried about any other kind of damage from the harmonic balancer being off track. Thanks for any input. Jay.