I have the same problem!! 2019 Buick Encore Sport Touring erroneous low fuel warning
I also have a 2019 Encore Sport Touring and the same problem with erroneous low fuel warning. Mine started 2 months after owning the vehicle.
I also have false seat belt warnings even though I'm actually wearing my seat belt, the reverse gridlines have randomly disappeared and reappeared when I haven't changed any settings, and my reverse collision warning failed.
What other problems do you have?