Yep, had a cruiser last week, Center stack went blank after sitting anywhere from 30 minutes up. Screen was unresponsive after starting vehicle. Initially we thought was interface module under radio, but after research, we replaced the TGW (Telamatics Gateway)as suggested by engineering. Vehicle has not returned w/ same concern. There is an upgrade for a condition wherein you get in and the radio is at top volumn (if built before July 25, 2011), this will not repair "unresponsive" units though ..