Rear window leak

Dali555 · January 6, 2021

Just talked with the "new" dealership dealing with my truck after the last dealership nightmare of two tries.... last night I texted him that I would like the TSB performed regardless of what his glass guy finds that is causing my leak. I told the previous dealership that TWICE because it was already taken apart so they might as well do it. The first time they replaced the entire thing, didn't do the TSB... the second time they "resealed" it, didn't do the TSB... this new dealership texts me back today and said they already performed the TSB and sent me a pic of the sealant on the top AND said that the window wasn't causing the leak but that the clips holding that stupid spoiler was where it was coming in. He sent me a pic of the old style yellow plastic clip and said they changed styles... all GMC did was add a gasket... and sent me a pic of the new clips they were installing. When I get my truck back I will wait a bit and see if it leaks... if it doesn't then I will add the tube gasket I mentioned in a previous post here to the spoiler gap on top and to the gap between the spoiler and the window frame. HOPEFULLY, I will finally be done with this....

SPASierra · January 6, 2021

Was you headliner getting wet every time it leaked? Mine drips off the rails, but the headliner seems to be dry. I may give the dealer a call and at least discuss it with the Service Advisor.

Dali555 · January 6, 2021

16 minutes ago, SPASierra said:

Was you headliner getting wet every time it leaked? Mine drips off the rails, but the headliner seems to be dry. I may give the dealer a call and at least discuss it with the Service Advisor.

No, my third time the drips were pretty minor and just dripped on the top of the seat....

jason1derful · January 6, 2021

Got my truck back this morning. They originally started with taking the spoiler off and applying the sealant. They confirmed this didn't fix the leak and kept the truck longer for a replacement window. So far so good, no leaks but its only Day 1.

Fizzery6 · January 8, 2021

Has anyone explored installation of this aftermarket Power Slider sold on eBay? I contacted the seller and they claim it fits the new 2019+ body style. The design is interesting as it looks like the plastic slider track is mounted lower, allowing for glass to body contact around the entire sealing perimeter of the window. Rather than trying to sandwich the plastic slider track (known to crack) between the glass and body like the OEM GM design does.

Duramaxsky · January 9, 2021

As I have said before the aftermarket will fix this. They see money to be made. Now several companies will compete for the best fix. I hope mine holds up until there are several choices. Then I will just pay to fix it right.

Sent from my SM-T510 using Tapatalk

gdl2165 · January 10, 2021

On 12/9/2020 at 5:14 PM, Dali555 said:

Got my truck back after a week and a half. I’ll have to take a better look tomorrow as it was dark when I picked it up. I’ve attached a pic of the new glass numbers as well as the top of the frame and a pic of the old frame... slight difference

I've had my 2019 now for just over a year and took it in last week for the third time with this issue. The first two times they resealed it and called it good. I told them this time I wanted the window replaced, and I now have this same version. The tech notes say "The rear glass separating from frame". I didn't get to see the old window so I can't verify exactly what it looked like but if this is accurate then it appears there may be another issue other than just the cracked frames and failing sealant.

Blue5.3l · January 10, 2021

4 hours ago, gdl2165 said:

I've had my 2019 now for just over a year and took it in last week for the third time with this issue. The first two times they resealed it and called it good. I told them this time I wanted the window replaced, and I now have this same version. The tech notes say "The rear glass separating from frame". I didn't get to see the old window so I can't verify exactly what it looked like but if this is accurate then it appears there may be another issue other than just the cracked frames and failing sealant.

The plastic frame is glued to the window so even if the top is sealed real good eventually the frame will separate from the window elsewhere. Solid window is the best way to go to avoid future issues.

jd64 · January 10, 2021

On 12/31/2020 at 11:41 AM, SamDSJR said:

LOL. A 2020 or 2021 2500 Silverado. With any luck I'll be able to lemon that one too (they are still leaking and still documented cases on 2500's with build dates as late as 9/20.)

My 2020 2500 built 8/19 is also leaking. Just noticed it over the weekend. Small drips in the upper corners of each side, then dripping on the top corners of the back seats, also has stained the corners of the headliner.

bfontenot9 · January 10, 2021

Has anyone filed a formal complaint with the NHTSA? I have pasted the link to the form below and also NHTSA's website where the form can be found. Their website lays out how complaints are handled and used to determine if a recall is necessary. I feel like if we get enough people to file a complaint, they will investigate the problem. It is a possible step to having a recall issued. The fact that so many people found this thread and then went check their trucks, tells me that there are probably a large amount of people that don't even know they have a leak until it gets bad enough to start smelling of mold and mildew. Mold inhalation/toxicity is a serious health issue, but in most cases is overlooked and misdiagnosed. If enough cases are approached from this safety standpoint it should create enough attention to have a recall issued. Thinking ahead not only for ongoing issues for the new trucks, but as these 2019s are traded in and bought by more unsuspecting consumers who may be out of bumper to bumper warranties and who will be affected by this ongoing issue.

Lets spread the word and get as many complaints filed as possible.

https://www-odi.nhtsa.dot.gov/VehicleComplaint/

https://www.nhtsa.gov/recalls

Sorry if this has been brought up already. New to the leak club.

TB3546 · January 14, 2021

How many of you have or are in the lemon law process? If so what have been your outcomes? Good and bad. Thanks!

Duramaxsky · January 14, 2021

We have had a lot of rain here lately. Everything from down pours that are causing flooding to light rain. I keep checking but still not leaking. Although yesterday and today I will be driving the old truck. We had a massive wind storm night before last and there is stuff all over the roads. I don't want to risk scratching the black paint so it will stay in the garage.

Sent from my SM-T510 using Tapatalk

autoscribe · January 14, 2021

On 1/6/2021 at 11:00 AM, Dali555 said:

Just talked with the "new" dealership dealing with my truck after the last dealership nightmare of two tries.... last night I texted him that I would like the TSB performed regardless of what his glass guy finds that is causing my leak. I told the previous dealership that TWICE because it was already taken apart so they might as well do it. The first time they replaced the entire thing, didn't do the TSB... the second time they "resealed" it, didn't do the TSB... this new dealership texts me back today and said they already performed the TSB and sent me a pic of the sealant on the top AND said that the window wasn't causing the leak but that the clips holding that stupid spoiler was where it was coming in. He sent me a pic of the old style yellow plastic clip and said they changed styles... all GMC did was add a gasket... and sent me a pic of the new clips they were installing. When I get my truck back I will wait a bit and see if it leaks... if it doesn't then I will add the tube gasket I mentioned in a previous post here to the spoiler gap on top and to the gap between the spoiler and the window frame. HOPEFULLY, I will finally be done with this....

Hi - I am writer for the Detroit Free Press and I see a lot of complaints about rear windows for Chevy and GMC pickups. Would anyone be willing to talk to me? [email protected].

jason1derful · January 18, 2021

Another update. Its been a few weeks. Lots of rain here in the Northwest and still no leak after the window was replaced. I took it to the self car wash(it needed it). Soaked the top and got it all shiny again. I didn't find a drop inside. I hope it stays that way