I’d never thought of that. That is stupid design, isn’t it?
Yes it is. I get stuck driving a Silverado some times and it is the same way, full of water every time it rains.
I have to back it down my lane into the woods to get it on a hill steep enough to drain the 3” of water in the front of the bed. Then set there several min for it to drain.
Chevy trucks are worthless crap.