I got this from google AI:
To reset the 2019 Chevy Equinox sunroof and sunshade, ensure the vehicle is running or in Ignition On/Service Mode. Press the sunroof control button in a Close-Open-Close sequence, holding the final close press until the system cycles fully open and then fully closed. This entire operation must be completed within 5 seconds to successfully calibrate the motors and reset the position sensors.
If the sunshade does not begin moving during this process, restart from the beginning. After the initial reset, you may need to perform a "teach" procedure where the sunshade learns its baseline profile, typically involving holding the control for 10-15 seconds until it moves. If these steps fail, check for disconnected white plastic clips between the glass and shade, or verify that the fuses and motors are functioning correctly.
Never tried it, but hopefully it helps you