Do you have access to Mitchell1 Prodemand? If you are willing to share user/password (we can pay $250), please get in contact with us ASAP: email operation-charm [[at]] tuta.io or click to submit anonymously. (This is the last day we'll be asking)
OnStar Schematics
OnStar Schematics
Power, Ground, Serial Data, Microphone, and Display (UE1)
Antennas (UE1)