Rear window leak

2016 Sierra Owner · April 4, 2021

On 4/2/2021 at 11:49 AM, SigPig94 said:

Just spoke with the service manager again......anything other than a sliding rear window is apparently NOT an option (said electrical problems would be a certainty.....??)....so new slider it is. He also said that the replacement window they’ll be installing next week has a “new part #” so it’s possible that a new repair approach is in effect..... . Uhhh...hooray??? The dance continues.......

I don't think you would have any electrical problems. The sliders in these trucks are different from previous years. The motor and gearbox that opens and closes the window will separate now. Meaning they can leave the motor hooked up to the wires but, it won't do anything. I had my window replaced about a month ago. The glass guy came to the house and did the work. Here is the process....

SigPig94 · April 4, 2021

9 minutes ago, 2016 Sierra Owner said:

I don't think you would have any electrical problems. The sliders in these trucks are different from previous years. The motor and gearbox that opens and closes the window will separate now. Meaning they can leave the motor hooked up to the wires but, it won't do anything. I had my window replaced about a month ago. The glass guy came to the house and did the work. Here is the process....

Thank you for that.....I saw it earlier when I started reading this string and it is VERY informative....your pics REALLY assist in the understanding of the issue. I certainly hope this process fixed your water woes......and thanks to great posts like yours I’ll be asking specific questions when I bring my truck in for the window replacement next week.

Blue5.3l · April 4, 2021

7 hours ago, GN2018 said:

Did you swap out the window before it even leaked? If so, were you not able to order it that way?

Main question - how much did it cost? I’m planning on waiting until I have a leak, but there are times when you do what you gotta do and I might just pay for it myself. It’s hard to know, but a lot of this seems like a workmanship issue in both the original install and then the subsequent fix that seems often to not work.

I did the swap all on my own. Never gave the window a chance to leak. With getting a cap I wasn’t dealing with moving that to deal with the window. The glass guy had a good reputation and not a scratch or sealant mark anywhere. I ordered my truck and you can’t delete the sliding window. It was close to $700 with a GM solid window. A few of the chain places can do it for under $500. I went with the local guy who does most of the car dealers so he had the experience.

GN2018 · April 4, 2021

Wow, quite the sacrifice. I don’t use my sliding window, but I thought if I had a cap I would actually use it then. Thanks for the info. I’d pay $700 not to have to deal with the leak even though I’d be upset with GM. Still better than the aggravation.

Blue5.3l · April 4, 2021

5 hours ago, SigPig94 said:

This is precisely what I thought...to the point where i have already been contacting local auto glass shops. A couple have actually told me they “won’t touch” my issue because it’s a brand new vehicle and still in the warranty period......????.......why exactly an after-market shop would care about that is beyond me......I, the owner, assume all responsibility for what’s done to my truck so add that to my list of things to scratch my head over.
I’m gonna see how the replacement slider process goes in a few days at the dealership .......but I will DEFINITELY continue looking for a local window shop that I feel can fix this specific issue forever with a one-piece, non -slider installation.....I honestly feel that’s the only thing that’s gonna work. Hope I’m wrong.

The place I used thought it was extreme and suggested just resealing the slider early on. He does work with a local GMC dealer and got a solid factory window from them. In the end he said it’s your money and was confident in his work on a truck with under 300 miles. I think most shops are intimidated by removing the interior trim pieces and seat back.

Blue5.3l · April 4, 2021

25 minutes ago, GN2018 said:

Wow, quite the sacrifice. I don’t use my sliding window, but I thought if I had a cap I would actually use it then. Thanks for the info. I’d pay $700 not to have to deal with the leak even though I’d be upset with GM. Still better than the aggravation.

With the time of removing the cap and reinstalling it. Plus the wait time of getting into the dealer. Dealers glass guy is careless. It all added up to time is money. In addition to knowing the reputation of the guy I used help with the choice.

Transient · April 5, 2021

Mine either

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Might make a great train horn button if you go solid rear window. Just saying,.... [emoji38]

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Jglew82 · April 6, 2021

On 3/23/2021 at 9:27 AM, lebag335 said:

What did you get in its place?

2020 F250

BIGDOGx · April 6, 2021

I think those that have had it actually fixed you can see a clear difference in the way certain dealerships attack this problem. Most who have had a second hand glass company come and perform this fix have had good success which is no shocker here. Some dealerships have techs that care about the work they do, and some clearly are just collecting a paycheck and doing the bare minimal.

That guy a few pages back with what looks to me to be bathroom sealant white goop, is clear that it was done at a piss poor dealership service department. I think the people who just said f it and bought a non slider glass window are the smart ones here, time is money and going back to the dealership 3 times for this issue is not worth the hassle, 500-700 dollars is short money to get a non leaking truck imo. And yes i think gm should be fixing this issue but clearly now a year away from a major redesign that is never going to happen.

Transient · April 6, 2021

I think those that have had it actually fixed you can see a clear difference in the way certain dealerships attack this problem. Most who have had a second hand glass company come and perform this fix have had good success which is no shocker here. Some dealerships have techs that care about the work they do, and some clearly are just collecting a paycheck and doing the bare minimal.

That guy a few pages back with what looks to me to be bathroom sealant white goop, is clear that it was done at a piss poor dealership service department. I think the people who just said f it and bought a non slider glass window are the smart ones here, time is money and going back to the dealership 3 times for this issue is not worth the hassle, 500-700 dollars is short money to get a non leaking truck imo. And yes i think gm should be fixing this issue but clearly now a year away from a major redesign that is never going to happen.

It's not a major redesign. That's not how GM operates. It's a mild refresh, most likely just the front bumper and grille. Everybody hoping for a magic rear window fix will likely be disappointed. We should all be sure to be inviting and welcoming when the 22+ trucks start posting about their leaky rear window.

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jeepincbum11 · April 9, 2021

Add me to the list. 18k miles. Sealant attempted. Failed. Going back in for new window. Mexico truck for anyone still tallying the results.

What i find hysterical is that they did a multi point inspection and did not provide me with results as stated on the document.

Edited April 9, 2021 by jeepincbum11

Waylon78 · April 10, 2021

On 11/29/2018 at 8:13 PM, JKD said:

Update: Has been 18 days at the dealership and still not fixed. Removed and resealed the rear window only to find out today that the whole window needs to be replaced now because it’s leaking at the sliding window top rail even though it was confirmed by the dealer that the window seal itself was leaking due to poor job by factory in applying sealant. May be another two weeks to get the window from the factory. Then they have to take the windshield out in order to replace the headliner. Doubt I buy another GM after this one. Don’t what I’d get into because it seems automotive quality is degrading to the level of the 1980’s again.

Hello sir. I wanted to check in and see long term what ended up happening with your window. I just bought a 2020 GMC and it’s already leaking. I am trying to find out if anyone has had any luck with fixing this issue long term. Thanks!

Raymond378 · April 11, 2021

My 2019 Chevy RST with 24k back window started leaking last week. I called dealer and scheduled an appointment for this past Wednesday. The dealer had a window leak company do the work. I got the truck back the same day and you can't even tell they worked on it. No scratches, marks or sealant anywhere. It has rained the last two days and no leaks. Hopefully it's fixed permanently, but only time will tell.

wvmountaineers · April 11, 2021

My 2019 Chevy RST with 24k back window started leaking last week. I called dealer and scheduled an appointment for this past Wednesday. The dealer had a window leak company do the work. I got the truck back the same day and you can't even tell they worked on it. No scratches, marks or sealant anywhere. It has rained the last two days and no leaks. Hopefully it's fixed permanently, but only time will tell.

My 19 AT4 goes in this Friday. I can only hope for that level of service. Fingers crossed.

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Blue5.3l · April 12, 2021

8 hours ago, Raymond378 said:

My 2019 Chevy RST with 24k back window started leaking last week. I called dealer and scheduled an appointment for this past Wednesday. The dealer had a window leak company do the work. I got the truck back the same day and you can't even tell they worked on it. No scratches, marks or sealant anywhere. It has rained the last two days and no leaks. Hopefully it's fixed permanently, but only time will tell.

On the quality of the work do you know if it was a small mom and pop place or a chain place doing the work? I believe the odds increase if it’s a mom and pop place doing the work. Even if the slider does leak again just the fact of no scratches, marks, sealant anywhere shows quality work.