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Rear window leak

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LTOwnerInSC New Member

LTOwnerInSC

Posted
Posted

New club member here. I have only made it through 36 pages of this thread so far so forgive me if any of this is redundant. 
 

Bought my new 2019 LT in November 2019, build date is 07/2019 in Fort Wayne. Garage kept, but has been out any many rain storms and through many car washes. Found first evidence of leak about a month ago after a ride through the car wash. I thought the high pressure pushed some through the slider seal and wiped the drops off and went on. Then during the Christmas break was out with daughter and son-in-law and it was raining. Son says water just dripped on us. Inspected and found a lot more water than from the previous car wash. Looking close and pushing up on the headliner, I could see cracks. 16 of them in fact. I was at 32,350 miles so called dealer the next day. They told me to plan on dropping it off because they would have to remove parts to diagnose. While waiting on the appointment, I started researching and found the TSB and this forum. I let the dealer know when I dropped it off about the TSB and they were aware. They called me back that afternoon and told me the truck was ready. I asked what was done and they told me they had replaced the upper guide (which was not true) and applied seam sealant according to TSB and resealed the spoiler. They said do not go through a car wash for 24 hours. I asked about the confidence level that this permanently fixed the issue and was assured as they were aware of the issue and had experience with it.   They were very professional to work with and did a fairly   clean job (no scratches, broken parts, dirty fingerprints, etc).  However, when I took a good light for a close inspection when I returned home I did notice very slight water stains in the corners of the headliner and one arch off the very back. Not noticeable without a bright light. 
 

It rained some yesterday (two days after repair) so I backed the truck out from under the garage and let it sit out all day. No leaks. I’m just concerned about the longevity of this bandaid fix and it blows a hole in this only affecting early builds. 
 

I called service manager to discuss the stains and concerns and he did state replacing the headliner would not be an issue, but he could only do what GM states and could not replace the rear window unless it leaks again. Fingers cross,

 

LTownerinSC

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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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Bigfoot98 Enthusiast

Bigfoot98

Posted
Posted
On 12/22/2021 at 3:58 PM, bfontenot9 said:

Is the new solid glass still holding up to no leaks? Any advice on getting this done? 

All good, I’d find a local glass shop and have them do it.

They had it done in a few hours after verifying the window was leaking, they just wanted to make sure that it was indeed the window in case it was something else.

 

Just tell them you want the solid tinted defrosting glass for your truck, they all fit each other, they can leave the existing motor and related parts just don’t go running the switch and it’ll be fine. The slider has a cable assembly that goes on the motor so all they have to do is slide it off. They have to drop the side seatbelt covers for the wiring for the defroster and the seats for the motor, easy install once that’s done, no need to remove the spoiler.

bfontenot9 Enthusiast

bfontenot9

Posted
Posted
1 hour ago, Bigfoot98 said:

All good, I’d find a local glass shop and have them do it.

They had it done in a few hours after verifying the window was leaking, they just wanted to make sure that it was indeed the window in case it was something else.

 

Just tell them you want the solid tinted defrosting glass for your truck, they all fit each other, they can leave the existing motor and related parts just don’t go running the switch and it’ll be fine. The slider has a cable assembly that goes on the motor so all they have to do is slide it off. They have to drop the side seatbelt covers for the wiring for the defroster and the seats for the motor, easy install once that’s done, no need to remove the spoiler.

Thank you! Glass guy came look at mine last week and is ordering the solid glass for mine. Can’t wait to hopefully put this issue to rest! 

  • 2 weeks later...
bowtie2007 Enthusiast

bowtie2007

Posted
Posted

To comment on the 2500s, I came over to this forum because there is way more information on the leaking windows. I have a 2020 Sierra 2500 and the rear window first started leaking at 20,000 miles. The dealership sealed it but a year later, it has started leaking again. The sealant does not appear to be a long term fix.

  • 3 weeks later...
JohnCasey Enthusiast

JohnCasey

Posted
Posted
On 2/7/2022 at 5:17 PM, Musgo said:

2nd time winner of the Leak.  First repair lasted one year

Got you beat. I’m a 4th time window leak waiting on the repurchase to be built. 😂

Tjlands New Member

Tjlands

Posted
Posted

2020 Chevy 2500 crew cab 

Not sure when it started but found water on back seat at 25k miles

headliner stained , insulation wet . Not happy. Was told by dealer could take up to 6 months to get parts to fix

wvmountaineers Enthusiast

wvmountaineers

Posted
Posted

19 GMC Sierra AT4 here.  Had the leak, took it to the dealer and they seem to have done a good job fixing it from a leaking perspective.  My problem now is the noise from what I’m guessing is the spoiler.  In the cold temps it cracks and pops like crazy.  No difference in noise when going over bumps, etc, just temperature fluctuations.  It’s driving me crazy.  Going in to the dealer in March, will have them look, as I’m still under warranty.

 

Mostly  wondering if anyone else had this happen, and what the fix was.

 

thanks

Ratchetarms Enthusiast

Ratchetarms

Posted
Posted
2 hours ago, wvmountaineers said:

19 GMC Sierra AT4 here.  Had the leak, took it to the dealer and they seem to have done a good job fixing it from a leaking perspective.  My problem now is the noise from what I’m guessing is the spoiler.  In the cold temps it cracks and pops like crazy.  No difference in noise when going over bumps, etc, just temperature fluctuations.  It’s driving me crazy.  Going in to the dealer in March, will have them look, as I’m still under warranty.

 

Mostly  wondering if anyone else had this happen, and what the fix was.

 

thanks

https://gm-techlink.com/?p=14435

 

 

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  • 3 weeks later...
x31 Enthusiast

x31

Posted
Posted

My 2020 had the sealant applied a year ago and it has now failed, made a real mess of the headliner.   The dealer said the plastic window frame is cracked this time so we're waiting on a window and headliner.  I am driving around with rags on the top of the back seat when it rains, what a joke, my CJ is more watertight.

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