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Rear window leak

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DHBWA Enthusiast

DHBWA

Posted
Posted (edited)

Anyone that used flowable silicone have there slider glued tight as silicon flowed into a large crack?

my wife’s truck has one large crack in the frame. Probably a .030-.045” wide in the lower face on the inside. We live in a fairly dry climate so she has been dragging her feet on what to do (typical for her)…. Last thing I would want is to have that sealer flow in that large crack and glue the slider solid.

On hers I was seriously considering cleaning the track best I could and just use Permatex flowable window sealer without removing the spoiler…... If did it like mine and remove the spoiler I would just put one layer of premium GE silicone first to prevent it from flowing into the large crack.

Maybe the silicone can’t get to the glass…..? Not sure….

Thoughts???

Edited by DHBWA
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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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AJMBLAZER Enthusiast

AJMBLAZER

Posted
Posted

No issues with mine and no one has reported that issue that I've seen in the past several years.

 

Not saying it can't happen, but it'd have to be pretty big crack for it to get through the frame and into the track.

DHBWA Enthusiast

DHBWA

Posted
Posted (edited)

Checked my truck after removing the spoiler and sealing the entire top and after a hard rain there was one little drip on right side. Wet right at the connection for the defroster and can’t see where it came from except that it wasn’t from the two bolts.

 I cannot fathom where it could leak unless it’s at the urethane seal on the extreme outer edge where I may not have gotten any sealer….Argh

Edited by DHBWA
  • 1 month later...
EXSlider400 Senior Enthusiast

EXSlider400

Posted
Posted (edited)

Well… seems like every year and a half I have to take it to the dealer to get rear window leak fixed. Noticed leak #3 this morning. 69k miles so GM does not cover and pretty sure the extended warranty will squirm their way out of it to. 
 

I used to buy (not lease) a new Denali (1500 or 2500 and Yukon) every 2 years but after a nightmare with the last Yukon Denali my wife would not buy GM so she went with Mercedes GLS and been extremely happy. With this leak (among a few other items), I will be switching to… was a life long GMC customer since 1998….

Edited by EXSlider400
bfontenot9 Enthusiast

bfontenot9

Posted
Posted
1 hour ago, EXSlider400 said:

Well… seems like every year and a half I have to take it to the dealer to get rear window leak fixed. Noticed leak #3 this morning. 69k miles so GM does not cover and pretty sure the extended warranty will squirm their way out of it to. 
 

I used to buy (not lease) a new Denali (1500 or 2500 and Yukon) every 2 years but after a nightmare with the last Yukon Denali my wife would not buy GM so she went with Mercedes GLS and been extremely happy. With this leak (among a few other items), I will be switching to… was a life long GMC customer since 1998….

You still have leaks with a solid rear window? 

AJMBLAZER Enthusiast

AJMBLAZER

Posted
Posted (edited)

It’s a design flaw but one anyone can fix for about $15. 

Edited by AJMBLAZER
  • 3 weeks later...
AEmedic Enthusiast

AEmedic

Posted
Posted

I am having my rear slider replaced today.  It has at least 3 cracks in the plastic frame.  My insurance policy has glass coverage and is covering the replacement.

  • Like 1
  • 2 months later...
Codeman00 Enthusiast

Codeman00

Posted
Posted

The good thing is that water is no longer leaking down my rear window after the at-home service bulletin fix.  The bad part is that I have a new dark line in my headliner around the same place where a small amount of water is still coming through at times.  Since its only a small amount of water, I guess I'm just going to let it happen and clean the water line on the head liner every year or so, hoping the leak doesn't get any worse.

AJMBLAZER Enthusiast

AJMBLAZER

Posted
Posted

Try sealing the spoiler over the window?  I got pissed a while back and just put some super duper caulk stuff I had for some other job in the leading edge of the spoiler and the only sign of a leak I've had was in a crazy hard rain we had a few weeks ago where the rain was coming down sideways straight at my rear window.  I found where the water got through, there's a small divot in the sealant I put there, and got a new tube to fill that spot.

Codeman00 Enthusiast

Codeman00

Posted
Posted
46 minutes ago, AJMBLAZER said:

Try sealing the spoiler over the window?  I got pissed a while back and just put some super duper caulk stuff I had for some other job in the leading edge of the spoiler and the only sign of a leak I've had was in a crazy hard rain we had a few weeks ago where the rain was coming down sideways straight at my rear window.  I found where the water got through, there's a small divot in the sealant I put there, and got a new tube to fill that spot.

Did you happen to take any photos?  My leak is so minor that I’m not in anyway excited about taking that headliner down again.  I cut my fingers on the fiberglass edge and pulled the one of the clips off during the first round.  Luckily I had a hot glue gun lying around when that happened and a little luck to eyeball assemble it back in the perfect spot.   Ugh. 

AJMBLAZER Enthusiast

AJMBLAZER

Posted
Posted

Stand in the bed, facing the front. Identify space between spoiler’s front edge and cab. Caulk/seal. 
 

Mine’s not pretty but it works.

 

A poster on here had a link to some self adhesive weather seal from Lowe’s he used and had pictures. When I went to do the same the gap between my spoiler and cab was much tighter and the weather seal wouldn’t fit. Hence the caulk. 

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