Tomato : contacted several companies or should I say resellers,they all say that you cannot just change the VCIM and gain Bluetooth.I was reasonably sure that you could do this but was then told that even if you could you would have to get the VCIM reprogrammed.I guess I got the wrong info.I will do a search here to see what others have done,all I want to do is stay as close to stock as possible ,don't mind changing the VCIM if that would work,but if I have to start ripping into the audio then I may as well either connect to Satellite and Onstar or just buy a better head unit . Brings up another issue,I will check around this site for an answer to this also ,radio antenna(shorty,rubber ducky) is there a way to see if it is a antenna issue ,channels don't always come in well out here,my other vehicles work just fine but all have the regular masts.