Hi - Curious to know if anyone has been able to integrate their cell phone into the speakers/microphone that are already installed and intended for use with the OnStar system? It would be great to tap into something that is already there!!!

Regarding Onstar, the old style antenna on the side of the rear window of the SRX seems to be a poor design choice, perhaps an afterthought?

Thanks for your thoughts on this....

I doubt there are aftermarket adapters to fit the Cadillac's OEM Onstar equipment. However I am sure there are plenty of third-party hands-free accessories for your specific mobile provider and phone.

As for the antenna, OnStar's ANALOG cellular antenna definitely looks "afterthought" as does the Nav System's GPS antenna--both could've been better integrated. Also, as I understand it, OnStar's GPS and the Nav System's GPS are not integrated and are separate.