GM Service Manual Online
For 1990-2009 cars only
Makes 🢒 Opel 🢒 2009 🢒 GT 🢒 Power and Signal Distribution 🢒 Data Communications 🢒 Data Communication Schematics
Figure 1:

Low Speed LAN
Object Number: 2049979 Size: FS
Figure 2:

High Speed LAN
Object Number: 2049981 Size: FS