USB Media Size info

[mainetruck]

Plugged in a 2 GB USB into the standard radio and it worked, but a 256 GB wouldn't. Can't find any specs in the manual. Does anyone have an idea what the the radio supports.

[Thankful]

6 minutes ago, mainetruck said:

Plugged in a 2 GB USB into the standard radio and it worked, but a 256 GB wouldn't. Can't find any specs in the manual. Does anyone have an idea what the the radio supports.

Using MP3's highest quality transfer rate, I was able to get just about all of my music collection on a 32 GB.  I've read elsewhere (another GM board) that someone was able to use a 256 GB.  What year is your truck?  Earlier models may not support USB sizes as high as 256 GB.