System Update in the settings menu

TexasRaider94 said:

Anyone know how this is supposed to work or what it does? I plugged in a USB stick and it said it couldn't do it and to visit dealer if it continues to not proceed. Is this secretly a way to update the radio?

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Only dealers can access the updates. They literally have guidelines on what kind of USB and how to access the system to put the updates on the USB. I would love to post the GM article for this but this computer blocked GM Techlink.

In short, it's a feature you can't use at home.