Circuit/System Description
WARNING: This page is about a different car, the 2018 GMC Yukon XL, 2018 GMC Yukon, 2018 Chevrolet Tahoe, 2018 Cadillac Escalade ESV, and 2018 Cadillac Escalade. However, it is still accessible from the selected car via links, so may be relevant.
For an overview of the component/system, refer to Electronic Component Description
This diagnostic applies to microprocessor integrity conditions within the control module. This diagnostic also checks if the control module is not programmed or is programmed incorrectly.