Bought a 6 month old 2016 Eco with 7500 miles off of the used lot at a Chevy dealership out of state (1400 miles from me). When I drove it off of the lot, SiriusXM was working. I assumed that maybe the previous owner that had traded it in had bought a subscription that was not yet expired....Great! Yesterday, the Xm quite working, except for preview channel 184. I called Sirius and asked them for a free 3 month subscription, they agreed and tried for over an hour to send me an update signal. According to their records, the dealership gave me a free subscription day before yesterday. After 1 1/2 hours on the phone, the technician suggests that the radio needs a "hard reset". Anyone familiar with this problem and/or know if there is any such thing as a hard reset on the eco radio?