When the iPod is connected through the USB port in the car, the iPod becomes DOCKED. This funtion does not allow you to use your iPod for functionality. The only way to navigate through your iPod is the on screen selections that buick provides. All this is great except when you want to change from shuffle to a specific CD or vise versa. The iPod will dock in the buick and function on the last setting you had the iPod in. For example, if you were shufffling all songs, the when the iPod gets plugged in, it will continue to shuffle ALL SONGS. If you go in the navigation menu and select a specific song to listen to the shuffle feature becomes disabled and you can only hear the rest of the songs on the album you selected. NOW, when you get to all songs and select shuffle, it will only shuffle the songs from whichever album is selected. In order to get All of your songs to shuffle again, you must unplug the iPod from the dock conncector (USB port) goto all songs on your ipod that is now functional, select shuffle, then plug the ipod BACK into the USB port. When i asked the dealership about this issue he said that apple has problems with the GM Software that is lynced with the car. I was told that apple has there own creative way with software that is not compatible for gm cars. I find this a little hard to believe seeing how APPLE is one of the largest mp3 devices out there. Is there some sort of app that will fix this on my ipod?

It also asks me that the accessory connect is not supported...however it gives me a selection of choices to download from the app store...this being Sticher radio, pandora, and a couple other choices. None of these are any unitily that will give me functionality with my ipod.

ipod- 4th generation iPod touch 64GB