It was advertised as the larger trunk in the industry

But, trunks normally don't leak.  The book says it has drainage and if you keep it clear it'll drain properly.  My drainage is clear and it leaks in many places.  Even had the dealer reinstall the covers.  Anyone else have this issue.  It's more than a few drops, a lot of stuff get's drenched if it does more than lightly rain.  I called Chevrolet, they said, it's not their problem.  Anyone else get help from Chevorlet?