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

Pin Allocation


Object Number: 1955581  Size: FS
Master Electrical Component List
Control Module References
Pin Allocation
Body Control Module and Ignition Switch, Power, Ground, Inputs and Outputs
G201 - 1 of 2
TCM and Transmission, Power, Ground, Serial Data, Inputs and Outputs
Module Power, Ground and Serial Data
Inflatable Restraint Sensing and Diagnostic Module and Inflatable Restraint Sensors, Power, Ground, Serial Data, Inputs and Outputs
Remote Function Actuator/Tyre Pressure Monitoring Sensors
Navigation Module and Navigation Gateway Module Inputs and Outputs
Radio, AM/FM Antenna and Diversity Antenna
Instrument Cluster Power, Ground, Serial Data, Inputs and Outputs
HVAC Module, Power, Ground, Serial Data, Inputs and Outputs
Front and Rear Object Alarm, Module and Rear Sensors, Inputs and Outputs
Bluetooth System (with Telematics)
Bluetooth System
Theft Deterrent Module, Power, Ground, Serial Data
Memory Seat Module, Seat Interface Module, Lumbar Switch and Memory Seat Adjuster Switch, Inputs and Outputs
Figure 2:

Pin Allocation


Object Number: 1955589  Size: FS
Master Electrical Component List
Control Module References
GM LAN Layout
Pin Allocation
G201 - 1 of 2
Figure 3:

GM LAN Layout


Object Number: 1955591  Size: FS
Master Electrical Component List
Data Link Communications Description and Operation
Control Module References
Pin Allocation