My sister bought a new Buick Encore last fall. She noticed recently that several functions of her entertainment system are no longer available. She no longer has the Bluetooth, AUX input, and USB input functions available. She was told by the service dept that those functions are only available through the OnStar system, and she has to pay for a monthly service to get them. This is extortion by GM! Any other make has these functions built into the vehicle, not obtained through a monthly service. What a crock!