Conditions for Setting the DTC
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.
The rear differential clutch control module receives an invalid message from the electronic brake control module (EBCM) over the serial data circuit which causes the rear drive clutch control module to deactivate.