Jamesleemartin

I tried everything on this thread and can't even get the Intellilink to recognize the USB drive or the SD card. Here is my problem: I have a 2015 GMC Sierra SLT with the NAV radio. The first week I had the truck I tried playing music through the USB and it would never recognize the USB. Threw about 15 songs onto an SD card and it recognized and played the songs, but often play a different song than what I choose and would not go into separate folders. I recently set up a new sd card with all of my music and I keep getting a "No media device present" error message. Tried formatting Fat32, NTFS, MP3, M4A, etc, along with several different size and brands of SD cards. None of them are recognized. Called Intellilink customer service 2 times and they are clueless as to the problem. I have power to the USB slots because the phone will charge, and I put the original SD card that half way worked at first and now it will sometimes recognize it but it locks up and will not play. I have searched all the forums and tried all the suggestions I have seen and still no luck. Do I have a bad system, or has anyone else had similar problems?