GM Service Manual Online
For 1990-2009 cars only
Makes 🢒 Chevrolet 🢒 2005 🢒 Cavalier 🢒 Accessories 🢒 Cellular Communication 🢒 OnStar Schematics
Figure 1:

Antennas, Data Link, Ground and Power
Object Number: 1400625 Size: FS
Figure 2:

Inside Rearview Mirror
Object Number: 876417 Size: FS