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2010 Sierra Hybrid strange sound

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    • February 25, 2023 at 12:42 pm #748885
      frophotos
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      2010 GMC Sierra Hybrid makes a strange sound when the gas engine shuts off. Seems like it is coming from the top of the engine. Rattles the engine a lot and kind of a grinding clicking pumping noise. Wish I could describe it better. I took video but not sure I can attach it.

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