GM Service Manual Online
For 1990-2009 cars only
Figure 1:

Power, Ground and Class 2


Object Number: 499646  Size: FS
Navigation System Components
Gateway Communication and Video Jacks
Navigation System Connector End Views
G401
G402 - Fuel Sender and Other Items
Figure 2:

Gateway Communication and Video Jacks


Object Number: 499652  Size: FS
Navigation System Components
Video and Radio Communication
Power, Ground and Class 2
Cruise Control and Vehicle Speed Signal
Figure 3:

Video and Radio Communication


Object Number: 499648  Size: FS
Navigation System Components
Antennas
Gateway Communication and Video Jacks
Handling ESD Sensitive Parts Notice
Navigation System Connector End Views
Entertainment Connector End Views
Navigation System Connector End Views
Figure 4:

Antennas


Object Number: 499653  Size: FS
Navigation System Components
Video and Radio Communication
Handling ESD Sensitive Parts Notice
Navigation System Connector End Views
Navigation System Connector End Views
Navigation System Connector End Views
G300, G303, G304, G306
G300, G303, G304, G306