Circuit/System Description
WARNING: This page is about a different car, the 2019 Chevrolet Traverse. However, it is still accessible from the selected car via links, so may be relevant.
When the telematics communication interface control module receives Over-The-Air messages, it will compare the information received to the data stored in memory. If the VIN stored in memory does not match the VIN received via Over-The-Air messages, the telematics communication interface control module will set a DTC and commands the red LED on ON.