Water leaks passenger side

[Bruce Percival]

My brand new 2018 Sierra has had sitting water on the passenger side floors front and rear since I picked it up new last month!  And the stench of musty moldy wet floor carpeting is overwhelming!  

I dropped it off at dealership yesterday.  I want and expect the leak(s) to be repaired and the nasty carpets to be replaced.  

I’ve been reading about these leaks on 2014-2018 Sierras and Silverados.  

Are there any relevant TSBs or recalls yet?

[Slvijoe]

I just purchased a 2017 Silverado, and my truck had a leak just like yours. The dealer found the leak,  it was the cabin air vent leading out the rear of the the cabin on the drivers side.