Welcome to the club fellow Lubbock person!
Bluetooth/Handsfree is part of the C&C package and once you buy the car (exclusive to the 2LT and 2SS) it is yours. Onstar has a phone that you can buy minutes for or pay month to month IIRC. Personally I bought minutes for $18.xx. The minutes/service will run out when your subscription to OnStar runs out. XM you have for three (3) months. After, you can pay month to month or a bulk payment. People have been getting 50% off their OnStar renewal for about $77.xx.
Again, welcome and hope to see you around town!