Good luck! Hope they do!I too have this make ans model which was also a returned lease with low miles and nearly new condition. I noticed a weird odor. Upon investigation I found almost 5 inches of water standing in the wheel well. My entire carpets were soaked. We took it to our Chevy dealer because of course I have a 6 yr bumper to bumper extended warranty. They claimed no knowledge of this problem in 2015. Of course the warranty does not cover leaks? WTF?? So they spent 3 hrs tore the entire back end apart, sealed some screw holes and rescrewed them. Well yesterday I looked because i never pt the carpet back and theres 2-3 more inches of water. I will go back as this is a defect and they will fix it under warranty as it appears to be a manufacturing issue. Glad I found your post!