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My 2020 Laramie 4x4 is doing the same thing at 24,000 miles. The dealer told me it needs a new "alternator"...which I have come to learn is the MGU and its on backorder with no ETA.
I'm in the same boat with a 2020 with 24K miles and its been making the whining noise for the past several months. I took it to my dealer and they told me it needed a new alternator which of course is the MGU and of course they told me its on back order. This is a year later from the previous...
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