One of the end caps for my 2021 Chevy Traverse's roof rack was lost to an automatic car wash. Chevrolet does not sell replacement caps, so I designed a replacement.
This file is for the Left-Hand side. You can mirror it for the Right-Hand side. It will fit either the front or rear rack.
It is not perfect, but fits “good enough” for my need. It was a little snug, so I tapped it on with a rubber mallet to install it. As you can see from the photos, it is obviously not original, but from 6 feet away, you really can't tell. Most importantly (for me) is that it is functional and keeps the rubber strip on top of the rail in place.
I printed in PLA without supports.
The author hasn't provided the model origin yet.