I have a 2011 Enclave purchased in Aug, 2010. The audio features have stopped working numerous times. Nothing works, no onstar, no blue tooth, no radio, not even the noise for the turn signals. Had it in for service 4 times and they said they have a program issue. Just today I had a battery saving message and the heated and cooled seats not working. Anyone else having a problem. GM says Im the only one.