Garmin Zumo 550 and wiring it into my H2

[CDiprecision]

Hi everyone. I have a Zumo 550 for my Bike, and It comes with a nice car mount. The car mount has a 3.5MM Audio out jack, and a 2.5MM Microphone jack.

Is there a way to hook this into a stock 04 H2 sound system(To utilize the microphone and audio like it does with the On-star stuff?) I have the Bose system with 6 CD changer. I do not use the Onstar service.

Thanks for any helpful input..)