Hi, I have a 2008 corvette. I just put the avic-d3 in with the GMOS-04 adapter. Everything seems to work right, except when I push the Onstar button...the radio mutes...but nothing is heard. If I turn the car off, then back on...I usually start to hear the onstar voice talking. I have NO bose.

I did the bypass if that helps.

Contact GMOS make sure you have the current version

I have the correct version.

I have had too many bad experiences with Metra and Venture interfaces, I just stick with PAC, Peripheral and Soundgate....Nav-TV for video. Try the Peripheral GMAH24 http://peripheralelectronics.com/pdfs/gmah24.pdf