Passenger side water leak

Peyton88 · February 13

Hey everyone

I have a 2015 Silverado 2500 Duramax. I’ve noticed my passenger side floor board is wet. As well as my rear passenger side which is because I park on a bit of a slant. I’ve discovered the water is flowing under the trim of the floor by the door.

I cannot figure out where the water is coming into though. The door drains are clear, door seals look fine, I don’t have a sun roof or cab lights. My windshield hasn’t been replaced before but I wonder if the seal can go bad over time.

Any other places I should check? Pics attached.

the first pic is where the water is flowing under but if you trace it farther into the cab it’s not running from the firewall or anything.

any help is greatly appreciated!

motionl-88 · February 27

Hi there I own a 2015 2500 HD and had the same exact problem been to the dealer many times with absolutely no fix what I wound up doing was exactly where the black tape goes around the wire harness there I drilled a 3/8 inch hole put in a 4 inch piece of 3/8 gas line hose silicone it up put it all back together it’s been six years the truck sits outside be through many rain storms no more wet soggy carpet dry as a bone hope this helps

Peyton88 · February 27

48 minutes ago, motionl-88 said:

Hi there I own a 2015 2500 HD and had the same exact problem been to the dealer many times with absolutely no fix what I wound up doing was exactly where the black tape goes around the wire harness there I drilled a 3/8 inch hole put in a 4 inch piece of 3/8 gas line hose silicone it up put it all back together it’s been six years the truck sits outside be through many rain storms no more wet soggy carpet dry as a bone hope this helps

Do you happen to have any pictures? Also did you leave some of the hose out, I’m assuming you put the hose in for the water to drain out?

motionl-88 · March 12

Sorry didn’t take any pictures, and yes I left about 3 inches of hose hanging down underneath which can’t be seen unless you get under the vehicle works like a charm carpet’s are completely dry all of the time I believe the water is coming in where that harness originated. Bottom line I’ll take the 10 minute repair that works over the endless hours of frustration and soaked smelly carpets any day good luck