GM Service Manual Online
For 1990-2009 cars only
Makes 🢒 Chevrolet 🢒 2009 🢒 Corvette 🢒 Power and Signal Distribution 🢒 Data Communications 🢒 OnStar Schematics
Figure 1:

Power, Ground, Serial Data, Antenna, and User Inputs
Object Number: 2053622 Size: FS
Figure 2:

Audio Output
Object Number: 2053632 Size: FS