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George Nicoloff

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  • Name
    George
  • Location
    Northern Illinois
  • Gender
    Male
  • Drives
    2023 Sierra XLT

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  1. George Nicoloff
    My 23 Sierra does the same thing. I found that if you change the fan speed, taking it off of auto control, for about 15 seconds and then hit the auto button turning it back on it will work correctly until you shut the truck off. Definitely a software bug. Has anyone tried this Y172 update?
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