Remix of BurasPrints' Silverado Cubby Gauge Pod. This is fits two barrel mount, e.g. USB ports, devices.
"It's the cubby just below the center dash vent. Not on all Silverado's though. Once you remove the old cubby, you need to remove the old clips which can be a pain. But are necessary to a good fitment in your truck.
Replaces GM15766229 Cubby so check to see if this looks like yours."
I used one of each of these:
https://www.ebay.com/itm/285021151594
https://www.ebay.com/itm/284216777328
Note the two hole sizes are not the same. Fusion 360 file included.
The author remixed this model.