Throttle Body Idle Air Flow Compensation Reset: Description
WARNING: This page does not describe the selected car, but rather 6 other vehicles, including the 2018 GMC Yukon XL, 2018 GMC Yukon, 2018 Chevrolet Tahoe, 2018 Chevrolet Suburban, and 2018 Cadillac Escalade ESV. However, it is still accessible from the selected car via links, so may be relevant.
For an overview of the component/system, refer to:Throttle Actuator Control (TAC) System Description
This procedure triggers the control module to learn the values of the component:Q38 Throttle Body - Airflow Adaptive Values