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Genuardi

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  1. I have a 2020 trailboss with the 5.3. Just started getting that turbo spooling noise at 44K miles took it to dealership and they said it is the pump in the transmission whining. It is covered by the powertrain warranty. Sounds like it will be in the shop at least another week. I know this post is from a couple years ago but hope it helps anyone else having this problem.
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