I am having a similar problem with my 2002 Durango. It usually happens while on cruise control. Feels like a hiccup, and you can see the tach jump 2-300 rpms. Mostly happens under a load climbing a hill. Taking the OD off does not help, it just happens at a higher rpm. I also get a low rpm tach shuffle around 35-40 mph. I have not yet taken it to the dealer, I am out of warranty.
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