Ambient Air Temperature Calculation Reset (with Ambient Air Temperature Sensor wired to ECM): Description
WARNING: This page is about a different car, the 2019 Chevrolet Malibu. However, it is still accessible from the selected car via links, so may be relevant.
If equipped, This procedure resets the control module learned values of the component/system: B9 Ambient Air Temperature SensorHardwired:K20 Engine Control Module