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.