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Rear window leak

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OnTheReel Senior Enthusiast

OnTheReel

Posted
Posted

Just a poor design. I personally think if it was an easy fix they would have solved it for the 2020 model year. We’ll see about 2021 I guess.

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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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econometrics Senior Enthusiast

econometrics

Posted
Posted
On 10/28/2020 at 6:03 PM, OnTheReel said:

“Barely raining” is usually the worst for some reason.

Yes, this. Mine barely leaks when it rains hard. ??‍♂️

gmcAT4tumor New Member

gmcAT4tumor

Posted
Posted

What was the final outcome of this issue.  I have a very very slight leak on the top drive side.  it pour last night and not enough to get everything wet but enough that there is moister in there.  what is the best fix and did it hold up.  2020 at4

UGADawgs Enthusiast

UGADawgs

Posted
Posted
1 hour ago, gmcAT4tumor said:

What was the final outcome of this issue.  I have a very very slight leak on the top drive side.  it pour last night and not enough to get everything wet but enough that there is moister in there.  what is the best fix and did it hold up.  2020 at4

tldr.... nothing yet but flex seal or sell.

paui4m Enthusiast

paui4m

Posted
Posted

I picked mine back up today.

New seal and spoiler bolts are on-order. ETA mid-week next week. (high demand, go figure)

There was another truck at the dealer with the same issue. 

 

If this recurs, or doesn't stop, I am pursuing the solid rear window option.

UGADawgs Enthusiast

UGADawgs

Posted
Posted
14 hours ago, WACKEM_G said:

Wonder if this happening in the new GMC Hummer?! emoji848.png


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That's why they made it a convertable/t-tops, they expected it to get wet.

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WACKEM_G Enthusiast

WACKEM_G

Posted
Posted
That's why they made it a convertable/t-tops, they expected it to get wet.

I’d be down for a convertible GM Truck! [emoji1787]


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UGADawgs Enthusiast

UGADawgs

Posted
Posted
12 minutes ago, WACKEM_G said:


I’d be down for a convertible GM Truck! emoji1787.png


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I had a 76 blazer that was pretty much that, hah

WACKEM_G Enthusiast

WACKEM_G

Posted
Posted
I had a 76 blazer that was pretty much that, hah

Luved those Blazers! [emoji91]


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Duramaxsky Enthusiast

Duramaxsky

Posted
Posted

I’d be down for a convertible GM Truck! [emoji1787]


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SSR

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polarys425 Enthusiast

polarys425

Posted
Posted (edited)
On 10/20/2020 at 10:55 AM, Transient said:

Are you talking about the truck frame or the window frame? If the truck frame is cracked you'll have bigger problems than a leaking window.

Sent from my SM-N960U using Tapatalk
 

Why would you think he's talking about a truck frame crack?

 

I'm fairly certain he was obvious with "a crack in the frame of the sliding window".

 

Maybe he should just replace the cam instead.??

Edited by polarys425
Jrodpic Enthusiast

Jrodpic

Posted
Posted

Update on the rubber cord idea. The gap is not consistent all the way across and the rubber cord is firmer than I expected. I haven’t had a chance to try and soften the rubber up to get it to fit all the way across. Maybe someone else has some ideas on a softer weather stripping/ cord to fit in the gap???

LSUAT4 Enthusiast

LSUAT4

Posted
Posted
On 10/14/2020 at 7:40 PM, LSUAT4 said:

Add a 2020 AT4 with a build date of 8/20 to the list. Just got the truck back yesterday from having the valve springs replaced, now the rear window is leaking. I thought buying the 2020 I wouldn’t have these issues, haven’t even made a payment yet. Back to the dealership tomorrow!

9368C601-45D2-4233-92EE-D0A185947865.jpeg

Update got the window sealed and it turned out Sh.t, big blobs on both sides. Dealer tried to cut it out, made it worse. They are ordering a new rear window and having it replaced at Safelite, hopefully they  do a better job. Rear seats and head liner have to removed, so excited to have a brand new truck tore apart again!

455A1ECA-2896-43F6-9351-84949401ED0F.jpeg

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