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Rear window leak

Demon
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Rocz3cqg
Rocz3cqg

Sliding Glass or / and Stop Light Module reported Leaking Situation             Contacts

ShamrockShooter
ShamrockShooter

Well my 2019 early build leaker was replaced with 2020 hopefully not leaker. No signs of an leaks on the window or headliner of the 2020 so fingers crossed. Very impressed with the 10 speed after th

Thomcat
Thomcat

No leaker here so can't do a 100% verification, but the problem seems to be with the spoiler design, regardless of weather the sealer leaks or not, and any cracks in the trim make it worse.  

Posted Images

wacnstac Enthusiast

wacnstac

Posted
Posted
1 hour ago, obxdiver said:

Just wondering, as I wanted to buy a new 2020 Sierra or Silverado, but have now held off due to this problem.

Luckily I found this thread BEFORE purchase.

Been reading it since mid December.

 

Why do you think this spoiler was added to the roof design starting in 2019?

A.) For appearance?

B.) For fuel economy maybe with slightly improved aerodynamics?

 

When you look at that picture of the red truck with the spoiler removed, how in the world can that stay sealed for years to come.

Every hole in that roof has the potential to leak into the truck due to poorly sealed spoiler.

So many contours and surfaces have to mate perfectly.

 

IMO...They made a mistake with this spoiler.

 

 

If the leaks are caused by the spoiler itself and the holes under it, then why don't those with fixed rear windows have the problem?

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bamorris2 Enthusiast

bamorris2

Posted
Posted (edited)
On 2/19/2020 at 5:13 PM, hotrodz37 said:


Thanks Shamrock, I wound up ordering the Kent sealant directly from them. Should be here by the weekend.


Sent from my iPhone using Tapatalk
Edited by bamorris2
  • Like 2
Steve-2019 Enthusiast

Steve-2019

Posted
Posted
1 hour ago, wacnstac said:

If the leaks are caused by the spoiler itself and the holes under it, then why don't those with fixed rear windows have the problem?

From reading all these posts from the beginning, it seems to me that it can be from the holes underneath the spoiler or from the window or from "both" of them. ?

Ethan Fernaays Enthusiast

Ethan Fernaays

Posted
Posted
7 hours ago, Steve-2019 said:

From reading all these posts from the beginning, it seems to me that it can be from the holes underneath the spoiler or from the window or from "both" of them. ?

You're absolutely correct.

brianf60 Enthusiast

brianf60

Posted
Posted

I have read in previous posts that when they determine (or guess) the spoiler/ grommets are leaking the dealer is using seam sealer for remedy this. How are we going to get the spoiler off in 2 years if needed if they glue it on? This sounds more like a band-aid and not a real fix. I'm almost afraid to wash my truck anymore in case I find out its started leaking...

Centrebaseball Enthusiast

Centrebaseball

Posted
Posted
2 hours ago, brianf60 said:

I have read in previous posts that when they determine (or guess) the spoiler/ grommets are leaking the dealer is using seam sealer for remedy this. How are we going to get the spoiler off in 2 years if needed if they glue it on? This sounds more like a band-aid and not a real fix. I'm almost afraid to wash my truck anymore in case I find out its started leaking...

Having had my spoiler seam sealed at the holes, and then having a window replaced later, I can tell you the spoiler comes off with the seam sealer there (you can find some photos of my truck taken apart earlier in the thread if you want to see what it looks like off the truck after seam sealer applied)

hotrodz37 Senior Enthusiast

hotrodz37

Posted
Posted

The Kent Seam Sealer that I ordered directly from them was delivered the very next day. Now all I need to do is find a few hours to do this. I’m thinking I may also use some of the sealer to seal up the attachment holes underneath. I’ll have to see what I think when I get in there.


Mine shipped last night and won’t be here til Tuesday unfortunately. Was hoping to get it done this weekend but it’s supposed to be sunny next week so I guess it doesn’t matter if the window is sealed or not then!


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tbare54 Enthusiast

tbare54

Posted
Posted

Anyone had there headliner replaced recently because of the rear window leak? Just curious how long they had to wait for one to come in, dealership is telling me no idea , they are saying none in the country available.

19TrailBoss Enthusiast

19TrailBoss

Posted
Posted

So my entire window was replaced in September, seemed good for 6 months, now rear window is leaking again... Fu@k!!!! I love this truck except for this damn rear window!

 

Is the problem isolated to just those of us with the rear sliding glass?

 

Sent from my SM-G975U using Tapatalk

 

 

 

 

hotrodz37 Senior Enthusiast

hotrodz37

Posted
Posted
3 minutes ago, 19TrailBoss said:

So my entire window was replaced in September, seemed good for 6 months, now rear window is leaking again... Fu@k!!!! I love this truck except for this damn rear window!

 

Is the problem isolated to just those of us with the rear sliding glass?

 

Sent from my SM-G975U using Tapatalk

 

 

 

 

 

I wonder what they used to adhere the window when they replaced it, and if they used the Kent Seam Sealant on the top like before. Wondering if that is the problem? Maybe the Kent doesnt adhere well to the surface and over time, bumpy roads, shutting doors, body flex etc it peels away from the cab and/or window leaving a gap in between.

 

Might be worth trying 3M or Permatex - I am not opposed to being the guinea pig on this. 

19TrailBoss Enthusiast

19TrailBoss

Posted
Posted

Not sure, they actually had Safelite do the install to make sure it was done "right".

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Brandon Adams Enthusiast

Brandon Adams

Posted
Posted (edited)
2 hours ago, tbare54 said:

Anyone had there headliner replaced recently because of the rear window leak? Just curious how long they had to wait for one to come in, dealership is telling me no idea , they are saying none in the country available.

Mine only took a couple of days, but I still haven't gotten my truck back from where they replaced the headliner because they messed some stuff up in the process. It's been 2 weeks. 

Edited by Brandon Adams

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