Data Link Communications Description and Operation: Notes
WARNING: This page is about a different car, the 2015 Chevrolet Trax and 2015 Buick Encore. However, it is still accessible from the selected car via links, so may be relevant.
NOTE:
This is an overview of different serial data buses used by GM devices to communicate with each others. Use Data Communication Schematics (Encore) Data Communication Schematics (Trax) to find out which serial data buses are configured for a specific vehicle.