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2013 ATS 2.0T/6MT Premium
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Discussion Starter #1
I have a '13 ATS with a moonroof. I am getting a leak from somewhere, which I noticed makes the front passenger floorboard wet. It also seems like there is water drops on the kick panel on the right side of the floorboard. Has anyone had any leaks, and know where to start tracking that down?

As a side note, it seems like sometimes my CUE screen goes crazy (like radio station changing randomly, the channel list popping up and setting the channel favorites at the bottom, and being unresponsive to touch). Is it possible this is leak related? i.e. water getting on a computer board somewhere in the passenger side?
 

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Black Tesla Model 3, long range, AWD
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I know it was a common issue on the second generation CTS where the sunroof drains in the wheel wells of the front of the car would get clogged and cause water to back up and enter the interior of the car. This may be the same thing since your ATS has the sunroof. Just speculation as I don't think I've heard of this happening with the ATS but something to look into nonetheless.

Regarding the CUE issues, it is possible that your symptoms are being caused by water damage as I do believe there are computer components housed there but I'm unsure if they're CUE related. But what you're describing does sound like symptoms of water damage.
 

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2014 ATS 3.6 Premium RWD, 2016 Corvette Z06, 2018 GMC Sierra Denali 2500HD Diesel
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If you are getting enough water into the car, the humidity level will be high enough to make the touch screen act oddly because a concentrated moisture spot or spots will have the same affect as a finger touch to the screen.

As Ideal noted, check the drains for the roof and in this location a windshield leak is also a good possibility. The BCM may be located behind that kick panel, it is in a lot of GM cars. At any point you need to pull the panel and investigate further.
 

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2013 ATS 2.0T RWD, DP, Intake, HPT, CC
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I'd pull the kick panel and carpet to check for mold too. The AC system runs in the winter to dehumidify. Make the sure drain is not plugged.
 

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2013 ATS4 3.6L Premium
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Not specific to any vehicle, but I had a similar issue on a previous car (Saturn) and the leak was actually at the windshield. I found the easiest way to troubleshoot was to grab a big bottle of water and pour it strategically in certain areas. In that car's case, the sunroof did not leak (even though the dealer said it was the problem)... it was leaking from the top right corner of the windshield, coming down the A-pillar, and then onto the passenger floor... all of this happened behind the trim panels. The dealer did nothing to properly troubleshoot the problem, even though I paid them to do exactly that. Needless to say, I took it back to them and showed them the leak and made them refund my money.

Bottom line, you can't always trust the dealer and you really need to troubleshoot it carefully.

The fix was easy, I just got a crack in the windshield and had the insurance company replace the windshield (and the leaky previous installation).
 

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I just battled this issue. I have a 2013 ATS and had leaks running down my passenger side pillar and even dripping from the overhead console. I replaced the sunroof seal and took an air compressor to blow out the drain plugs but I still had a leak. I ended up pulling the passenger side headliner down enough to see the bare bones (after removing the o-shit handle and trim). I then had my son use a water hose and sprayed water just on the windshield seal before moving to the sunroof. I observed water leaking from the windshield seal, onto the headliner, and then running down the side. Before paying to replace the windshield, I bought some black silicone from the auto part store and used that along the windshield. I made sure it was smooth and looked good before it had time to dry and cure. This fixed my leak but if you want a more professional look, I would have the windshield done by a professional, if you find your leak is in the windshield.

Sent from my SM-G955U using Tapatalk
 

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Discussion Starter #7
Thanks for the input. I finally got around to pulling the kick panel and checking the drains for the sunroof. It appears that the water was draining fine out the sunroof - I could pour water in the drain hole and see it make a puddle under the car with no noticeable streams or water in the floor. I also poured a bunch of water under the passenger side windshield wiper, and i saw it draining to under the car too. Now I am leaning toward the windshield maybe. The only thing is, mine doesnt seem to have any moisture in the headliner, A-Pillar, or anywhere else until it gets to the floor. I did notice I'm starting to see a little bit of mold - any ideas on how to take care of that? Just let it dry out good and maybe put down some stay-dry type powder?
 

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Discussion Starter #8
I'd pull the kick panel and carpet to check for mold too. The AC system runs in the winter to dehumidify. Make the sure drain is not plugged.
Do you mean the AC drain plug? Any idea where that is located?
 

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2013 ATS 3.6L Luxury
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See drawing post #2:

 

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Chevy HHRs had the same problem. Not sure about Cadillac, but to fix it correctly you have to drop the headliner down to gain access to the drain tube, which has probably become separated.
 

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Check the top of the passenger side windshield seal. That's where mine leaked from after checking the sunroof in every way possible.
 
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