IIRC, there is a way to download 3D warehouse drawings free using SU Make 2017. I haven’t done this in a long, long time but find myself wanting to download a drawing. At my advanced age, recollection is poor, but I seem to recall that maybe the URL was different or one downloaded a colllada or other type file.
You can access the 3D Warehouse in your web browser and download the Collada version of the objects you’re interested in. Extract the contents of the ZIP file and import the .dae file into SketchUp.