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Software Update - What's changed?


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I have a 2019 GMC Sierra AT4.  My truck just downloaded/installed a software update this morning.  There's no description of the changes made, so I'm curious, does anyone know how to find out what changes were made? 

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Probably infotainment system from 503 to 809, or 509 to 803, I forget which but most have said including myself that we’ve seen no changes with the update.

 

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