I have a 2006 Buick Rainier. Unfortunately this year was a weird time for people to be able to have an auxiliary input for their iPods. I found and purchased something online and was able to use the OnStar is Bluetooth. Further digging led me to this app. I am now able to stream music from my apps for free to the car speakers. Although the sound is in mono not stereo it is better than nothing and wireless. Thank you.
Dibbgoogs655 about A2DPblocker - Bluetooth Mono