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Rear window leak

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brandonleg New Member

brandonleg

Posted
Posted

Mine's a leaker now, too.  2020 ltz built 8/19 in Ft. Wayne.  Took delivery on 1/11, 2000 miles ago.

Glass is a Fuyao E4, M1235, 43R 000072.

I caught it early, no headliner damage or rust.  I'm gonna try the permatex fix, maybe buy some time until GM actually fixes the issue.  Love the truck, wish it could be driven in the rain.  ?

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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.  

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BIGDOGx Senior Enthusiast

BIGDOGx

Posted
Posted
1 hour ago, brandonleg said:

Mine's a leaker now, too.  2020 ltz built 8/19 in Ft. Wayne.  Took delivery on 1/11, 2000 miles ago.

Glass is a Fuyao E4, M1235, 43R 000072.

I caught it early, no headliner damage or rust.  I'm gonna try the permatex fix, maybe buy some time until GM actually fixes the issue.  Love the truck, wish it could be driven in the rain.  ?

I would bring it in to at least have a record of them seeing it leaking, you start messing around with this stuff yourself your going to most likely own it if you know what i mean.

  • Like 3
SilveradoRST Enthusiast

SilveradoRST

Posted
Posted

So after getting my window goop with Kent sealant, it’s leaking again.  But this time it only leaks after a long rain.  Survives a touch-less car wash however.   Wondering if anyone has a copy of the official instructions to lower the headliner?  
 

I’d like to see maybe if I can spot the breach point add some more sealant.  I’d rather delay having to go back to the dealer until GM comes up with a more permanent fix. 

  • Like 1
anthony2558 Enthusiast

anthony2558

Posted
Posted

mine not leaking after it got replaced, but a co worker with a 19 LT was telling me that he had some smoking/burning smell and noticed it was coming from the rear defroster electrical, and that's when he realized his was leaking also

 

 

hotrodz37 Senior Enthusiast

hotrodz37

Posted
Posted
So after getting my window goop with Kent sealant, it’s leaking again.  But this time it only leaks after a long rain.  Survives a touch-less car wash however.   Wondering if anyone has a copy of the official instructions to lower the headliner?  
 
I’d like to see maybe if I can spot the breach point add some more sealant.  I’d rather delay having to go back to the dealer until GM comes up with a more permanent fix. 

My thought is almost every leak can be fixed with the Kent sealant (other than a cracked window frame) but it’s the incompetence of the techs that is leading to them leaking after this. If a proper bead was placed on the top seam of the window and then leveled out with a finger or dowel or something to make sure it spreads evenly and goes into any void it would probably work. The sloppy job by the techs with it just arbitrarily gooped along the window isn’t doing us any favors.

Like previously stated, I fixed mine myself with the permatex window and glass sealant which is a lot more viscous and goes into every nook and cranny - this is after I had the Kent sealant done by the dealer the first time.


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Fizzery6 Enthusiast

Fizzery6

Posted
Posted

Does anyone know if you have to drop the entire headliner, or can you just lower the back side to remove the roof spoiler and seal the rear window?  The GM TSB pics seem to show just lowering the back of the headliner. But it wants to hang up on rear window slide channel and I don’t want to crease the headliner. 

OnTheReel Senior Enthusiast

OnTheReel

Posted
Posted
17 minutes ago, Fizzery6 said:

Does anyone know if you have to drop the entire headliner, or can you just lower the back side to remove the roof spoiler and seal the rear window?  The GM TSB pics seem to show just lowering the back of the headliner. But it wants to hang up on rear window slide channel and I don’t want to crease the headliner. 

Dealer said they couldn’t just drop the back of my headliner, wasn’t enough room to work without creasing it. So they took the whole thing down. Take that for what it is.

hotrodz37 Senior Enthusiast

hotrodz37

Posted
Posted

These are awesome, thanks Brandon. Do you happen to have any of these on the sunroof? After mine was repaired, assuming they dropped the rear of the headliner, the sunroof shade is scraping in the dome light area. Would love to see a diagram to see if it’s off the track. I have a borescope I am going to drop the dome light and see what’s going on in there.


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Josef Enthusiast

Josef

Posted
Posted

While everyone is self quarantining they should watch “American Factory” on Netflix. It’s about fuyao glass company.  

Mike_F Enthusiast

Mike_F

Posted
Posted

 

Quote

My thought is almost every leak can be fixed with the Kent sealant (other than a cracked window frame) but it’s the incompetence of the techs that is leading to them leaking after this. If a proper bead was placed on the top seam of the window and then leveled out with a finger or dowel or something to make sure it spreads evenly and goes into any void it would probably work. The sloppy job by the techs with it just arbitrarily gooped along the window isn’t doing us any favors.

Like previously stated, I fixed mine myself with the permatex window and glass sealant which is a lot more viscous and goes into every nook and cranny - this is after I had the Kent sealant done by the dealer the first time.

Just picked up my ordered 2020 LTZ crew cab.

Going to add a camper cap.

The question is to all those who have endured this leaking problem.

Would you add the flowable sealant to a new truck without a leak as added insurance for future problems?

Really don't want to have to pull the cap back off for a repair and with the cap installed you probably won"t see any extra sealant anyway.

After 125 pages, I am just trying to be proactive for a potential problem that truly seems be "Rocket Science " for GM engineers to solve.

 

Thanks 

Mike

hotrodz37 Senior Enthusiast

hotrodz37

Posted
Posted
 
My thought is almost every leak can be fixed with the Kent sealant (other than a cracked window frame) but it’s the incompetence of the techs that is leading to them leaking after this. If a proper bead was placed on the top seam of the window and then leveled out with a finger or dowel or something to make sure it spreads evenly and goes into any void it would probably work. The sloppy job by the techs with it just arbitrarily gooped along the window isn’t doing us any favors.

Like previously stated, I fixed mine myself with the permatex window and glass sealant which is a lot more viscous and goes into every nook and cranny - this is after I had the Kent sealant done by the dealer the first time.
Just picked up my ordered 2020 LTZ crew cab.
Going to add a camper cap.
The question is to all those who have endured this leaking problem.
Would you add the flowable sealant to a new truck without a leak as added insurance for future problems?
Really don't want to have to pull the cap back off for a repair and with the cap installed you probably won"t see any extra sealant anyway.
After 125 pages, I am just trying to be proactive for a potential problem that truly seems be "Rocket Science " for GM engineers to solve.
 
Thanks 
Mike

I honestly wouldn’t touch it until it actually started leaking. There are a lot of leakers out there but it’s a small sample size of the hundreds of thousands of trucks out there. Who knows, you might get lucky and get a dry one!


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  • Like 2
Mike_F Enthusiast

Mike_F

Posted
Posted

hotrodz37

 

Thanks for your fast reply.

 

Guess I will let it roll as is and lean on my Irish heritage a bit.

Hopefully this is my last post on this subject. LOL

 

Good Luck to all.

ShamrockShooter Senior Enthusiast

ShamrockShooter

Posted
Posted
Just picked up my ordered 2020 LTZ crew cab.
Going to add a camper cap.
The question is to all those who have endured this leaking problem.
Would you add the flowable sealant to a new truck without a leak as added insurance for future problems?
Really don't want to have to pull the cap back off for a repair and with the cap installed you probably won"t see any extra sealant anyway.
After 125 pages, I am just trying to be proactive for a potential problem that truly seems be "Rocket Science " for GM engineers to solve.
 
Thanks 
Mike

I honestly wouldn’t touch it until it actually started leaking. There are a lot of leakers out there but it’s a small sample size of the hundreds of thousands of trucks out there. Who knows, you might get lucky and get a dry one!


Sent from my iPhone using Tapatalk
FYI if your truck has the camera in the rear brake light it won't work with the truck cap.

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