When you click on links to various merchants on this site and make a purchase, this can result in this site earning a commission. Affiliate programs and affiliations include, but are not limited to, the eBay Partner Network.
Those little drain slots at the bottom of the doors will get clogged up. I heard the right rear sloshing one day, pulled the rubber plug and water drained for several minutes! Cleaned out the drains and ok since or you can leave the rubber plugs out. I have heard of enough water accumulating that it compromised the moisture barrier that it leaked around the door panel and and got the floor wet.
But that doesn’t help with your headliner leak.
Thanks Harvey. I did notice a small water trail coming from the vapor barrier. It didn't seem like much, but I just covered it in kilmat because I had the door panel off. Realizing how easy it is to get these panels off, I am just pulling all of them and doing the kilmat to insure no water makes it through where the silicone bead is no longer attached on the vapor barrier. What I've discovered is that both of the two doors I've done so far have detached vapor barriers. See pic
You can actually see where the physical connect between the door and the plastic vapor barrier is broken. I"ve read that some people just push it back to make it stick again. IMHO, this is a bad idea. I tried it and left if alone for a bit. Came back and it had already lost adhesion. Note that it is the lowest part of the door so any water accumulation on that plastic will drain through to the interior. Honestly, I don't think it's enough to create the situation I have with significant water. But if the drains were plugged, then yes.
I did test the drains, but not on an incline. I will definitely do that when we test today. Thanks for the insight.
Would be nice to have a cheap smoke machine then figure out a way to pressurize the cab and watch for smoke to leak out. Not sure is the AC fan would create enough pressure to do oit but would make quick work of it.
Okay, WOW! I found the leaks. Yes, leaks. And once I found what was happening, the fact that only the curb side was getting water all made sense.
The problem: The track the rear sliding window runs on has multiple cracks in it causing it to leak water, which is filling up the gap between the inside of the window and the body of the truck, then overflowing into the corner of the truck and running down into the sill trays. There are cracks on both sides and in the middle. Since our road is crowned out front, which ever side is parked to the curb it lower than the road facing side, so the water travels that gap between the window and the truck body to the low side, then overflows.
I have determined that the water spots on the headliner are due to condensation and dripping down due to the amount of water in the truck. I tested the factory drains with a hose on full blast. Only drips came into the moonroof tray, not even enough to need a drain.
At this point, I am going to try to run expoxy on the cracks to see if I can seal them, otherwise it will need to be replace (at what cost, I don't know).
here are some pics. I was shocked at the amount of water coming through here.
Holy crap. I actually found someone else who reported stress cracks on the rear slider as the reason for leaking into the cab. My guess, there are more of these out there...
