Please explain what "drain cups" are ??!!

[Boar-Ral]

Originally Posted by f5fstop

In the Hummer, both the rear hoses run in the C-pillar, which is the pillar behind the rear door, just in front of the rear side windows. The rear hoses exit just in front of the rear tires.

So that is what those are.* When I pulled out the rear cup holder and cubby, I saw a rubber hose running down in front of the wheel well.* I wasn't sure what it was.* Learn something new every day!