Water under mat

[the blur]

I keep getting water under my driver side mat.
Took it to the dealer, and they replaced the antenna; but it still leaks..

Any help would be appreciated.

 

[Clinton Ellyson]

Lol. I chuckle only because I just fixed mine. Everyone told me it was the antenna too. My 05 has a little plastic access hatch, that's the only thing I can figure it's for, under the crowl at the back of the hood and under the windshield wipers. You'll have to pull the wipers and that crowl. The plastic lid looking thing is on the passenger side, pop it off, remove the dried out caulking, apply new and replace everything.

Now I know you muttered to yourself, "Hey dumbass, I said driver's side." Well, believe it or not water seems it's own path and once it hits all that stuff crammed in that dash and creates a path it will follow that path. You'll also start noticing little electrical glitches like the nav system not working, some dash lights going dim, etc, etc, etc...

I keep getting water under my driver side mat.
Took it to the dealer, and they replaced the antenna; but it still leaks..

Any help would be appreciated.

 

[Big Mama]

Take it back and have them fix it right. Agreed it’s usua the shark fin but can come from a leaky door seal or sun roof or windshield. You can check each of them with a hose if you want to tell them where the leak is. Please report back like Clinton did if it’s anything other than the shark fin.

 

[the blur]

They had the truck 2 days. ... and fixed the sun roof. So we'll see if the probably is resolved.
Where does the sun roof drain anyway ?

 

[PG01]

They had the truck 2 days. ... and fixed the sun roof. So we'll see if the probably is resolved.
Where does the sun roof drain anyway ?

Thru the roof and down the two A pillars to the wheel wells

 

[the blur]

Thru the roof and down the two A pillars to the wheel wells

How would that put water under the mat, into the carpet ?

 

[PG01]

How would that put water under the mat, into the carpet ?

Exactly.
The 2 drains are on either side of front of sunroof, a plastic/rubber tube pushed into a metal nipple and then run down the headliner to A pillar to inner fender. Now technically, the hose can become clogged or become detached, causing water to run down headliner, to A pillar to dash then carpet. Remember, water takes the path of least resistance so it is possible. To have water under the mat and not on top of it is another miracle, but it is possible that it’s hitting the carpet before the mat.
Personally, I believe if all this happens your headliner edges will show water, under the dash will show water and behind the kick plate will show water... but hey.. what do i know.

 

[SRQYukon]

My Yukon has had this problem for 3 or 4 years. Not all the time, just on occasion. I don't have the shark fin antenna or sunroof. Thought it might be the windshield since it was replace a few months before it happened the first time. It got broken...again...and this time I had Safelite check it for leaks. No leaks. I pull the weatherstrip and wind seal on the door and cleaned everything sealed the gap between the windshield side moulding ant the roof weatherstrip rail. Removed the wiper cowl and checked it for leaks. Put it on the rack at my son-in-laws shop and checked firewall and floor pan for holes, missing grommets, etc. Every time it leaked again. Finally realized it was only happened when I parked in the driveway with the nose of the truck downhill. Started parking it the other way and never leaked again. Still wondering where it was getting in.

 

[Big Mama]

The drains clog and water backs up and finds any way in. With no shark fin or sunroof that’s a tough one. Ever check under the cowl?

 

[SRQYukon]

Yes, I pulled the wiper cowl and checked that area. The only other thing I forgot to mention is that it only leaked when sitting. Never noticed any water when driving. Water only appears under the mat on driver side. No water under the dash or in the compartment behind the toe kick. Can't duplicate it with a water hose. Only happens when sitting nose down during a prolonged period of rain.

 

[Big Mama]

That’s definitely one you’ll want to post if you ever figure it out.

 

[the blur]

The water must be coming up from under the carpet. Because it certainly is NOT coming from the top down. It's between the metal floor, and base of carpet, then it comes up.

 

[Jeff Groves]

Don't know if the NBS has the plugs like other cars I've had but I have seen body drain plugs leak.
Mostly you'd get water up from under when hitting big puddles.
Had a buddy with a '69 Mustang that the plugs were so bad in that when we hit puddles it would blow the carpet up and soak you!
It was so bad that anytime we were going to hit a puddle he'd yell...
DIVE DIVE DIVE!

 

[the blur]

I thought I posted this in the other section. Mine is a 2013. Not sure how it got here ?

 

[ladorn45]

I had the same issue and did all the stuff everyone mentioned, and nothing worked. Finally realized it was the rubber grommet at the door that housed all the power mirror and door locks was not seated correctly.

 

[SRQYukon]

Yeah, I checked that because there are a few YouTube videos that mention it. I don't get water inside that area where the grommet is. Always dry in there even when carpet under the mat is soaked.

 

[the blur]

So..... the stealership is not doing well. They did the sunroof, the antenna, and I still have water under the mat. So it's going back next week.

 

[Denali716]

Had the same problem with my 03 took off the door panel on driver side and found that the plastic water barrier had Ben opened and sealed up right! Put some silicone on it and no problems since.

 

[Rocket Man]

Had the same problem with my 03 took off the door panel on driver side and found that the plastic water barrier had Ben opened and sealed up right! Put some silicone on it and no problems since.

The doors have drains at the bottom that get clogged. I pull the plastic flapper things out so they don’t clog.

 

[Bill-H]

I had the same problem, Even had the "heated seat turns itself on and off" thing. Turned out to be the door seal itself.