BARO Sensor Reset: Description
WARNING: This page is about a different car, the 2019 GMC Savana 3500, 2019 GMC Savana 2500, 2019 Chevrolet Express 3500, and 2019 Chevrolet Express 2500. However, it is still accessible from the selected car via links, so may be relevant.
For an overview of the component/system, refer to: Engine Control Module Description
This procedure resets the control module learned values of the component/system: Barometric Pressure Sensor - Airflow Adaptive Values