Rear window leak

[Pacfanweb]

On 3/13/2021 at 6:42 AM, Z71RAD88 said:

 

I wonder if this sealant is in tight supply and they’re just spreading out the very little supply they do have on hand to get the trucks out the door? 

No. It's just standard windshield urethane.  

[Pacfanweb]

2 hours ago, SilveradoRST said:

Unless the sheet metal has been damage from the over torquing.  Every bolt and nut can be replaced on the spoiler, without having to buy a new spoiler assembly.  They all just slide/snap in place on the spoiler side.

 

Of course, this whole thing shouldn't have happened.    

The TSB tells you to replace all those nuts.  Reason is, that white sealer that's applied to them.  Not much of it left after removing them.   There's 8 of them, and unless something's changed they come in 8 individual little bags.  What a pain.  
I replaced them the first few times, but I don't bother now, I just put a little bit of 3M 08612 butyl on the stud and that's better than that white stuff, anyway.  And I don't need to do go the parts department to get the nuts AND return the old ones, as warranty requires. 

There's also 2 10mm bolts (or screws if you prefer) on the outer part, but still inside the cab.  So 8 studs sticking through from the outside, and 4 screws sticking through from the inside.  Plus a couple more alignment clips and IIRC one more alignment stud as well. 

All of that stuff could leak, but I've never seen any of those places actually leak.  It's always been the window. 

[Pacfanweb]

On 3/25/2021 at 10:13 AM, BIGDOGx said:

I almost feeling like calling gm or your dealers service department and bitching them out for you, that is disgraceful and no excuse for it imo!

 

If GM can't fix your truck they owe you a new one imo! Maybe ask them to give you the non slider back window, the sliders are the problem in these trucks imo!

Why would you yell at the service department?  They didn't design it or build it.  They aren't at fault. 

And yes, it's only the sliders that crack and leak.  I've never seen one of the regular windows do it.  Might be a random one somewhere, but it's certainly not a "thing".  
I don't see why anyone wants a sliding window in the first place.  It greatly restricts your vision, AND they are really useless.  The helped back when you had a single cab, but on a crew they are pointless. 

Edited March 26, 2021 by Pacfanweb

[Pacfanweb]

23 hours ago, BamaBen said:

At least that what they told me...  funny how the maintenance records on my.gm.com are not filled in for the last 2 service visits.   

 

The count currently is 3 fixes of the spoiler gaskets and 1 reseal of the rear window.  I'm not giving them the chance to repair it again.  Lawyers are on it.

 

 

My guess is, it was the window the whole time.  I've never seen the spoiler gaskets leak, much less 3 times on one vehicle.  

[Pacfanweb]

On 3/23/2021 at 1:47 PM, tiggerfun42 said:

2020 Silverado LTZ Crew Cab with 18,000 miles and I joined the window leak club.    Thankfully my husband follows many Chevy sites and has been watching for this , so we caught it right away.

Dealer stated that GM has a notice out and they have to silicone it first, so currently its at the dealership where they hire a window company to come and fix.  It sounds like they remove the 3rd brake light piece that runs along the top of the entire back window, they will silicone and re-position it, then it has to sit in a heated garage for like 24 hours and I should have it back in a day or two.  If it leaks again, then they have the glass company replace the window.  My question to all of you who that have dealt with this,  after you had it silicone' d, did you have any other issues with the window leaking?    



I don't use silicone.  You're not supposed to, although I suppose you can. 
I've done quite a few, and only one has returned so far.   It was leaking way over on passenger side...not up top at the corner, but down a bit.  Where I didn't seal it and you really can't seal it, so it got a new glass.  

[Pacfanweb]

On 3/23/2021 at 9:54 AM, mrjulian416 said:

I stumbled across this product while in a West Marine this past weekend and immediately thought of this thread.  This may be something to try as a "last resort", it seems more flowable than the flowable silicone.

 

I will admit I do not (yet) have  leaking rear window but have been following this topic just in case.

 

Tolley wicking sealer

I'm going to buy some of that.  Looks pretty cool.  I am always on the look out for something new I can use.   

[gemarsh]

1 hour ago, Pacfanweb said:

......

I don't see why anyone wants a sliding window in the first place.  It greatly restricts your vision, AND they are really useless.  The helped back when you had a single cab, but on a crew they are pointless. 

Well, unless you have a dog.

 

Or a sunroof that gets used. If you open the roof at highway speed, there is a major vibrating drone. Open the slider and it goes away. 

[Pacfanweb]

3 minutes ago, gemarsh said:

Well, unless you have a dog.

 

Or a sunroof that gets used. If you open the roof at highway speed, there is a major vibrating drone. Open the slider and it goes away. 

My 15 has a sunroof.  It doesn't do that, but if you open one of side windows, it does.   I have no slider, either.  Didn't order it that way, I bought it with just under 5k on it and that's how it was built.    My visibility is WAY better than one with a slider. 

However, any window that causes that, be it a door, slider or sunroof window, you can just crack any other window in the truck and it goes away.  

[BamaBen]

Been researching other trucks while I wait on GM to decide what they’re going to do..

 

Over at ramtrucks.com, their Rear Window Crack and Leak thread is up to 83 pages.  Sounds like Dodge has issues too.

 

One poster is on his 4th service appt and still is leaking.

[UGADawgs]

19 hours ago, BamaBen said:

Been researching other trucks while I wait on GM to decide what they’re going to do..

 

Over at ramtrucks.com, their Rear Window Crack and Leak thread is up to 83 pages.  Sounds like Dodge has issues too.

 

One poster is on his 4th service appt and still is leaking.

I bailed a couple months ago due to my leaking "Sieverado", but have been still lurking on this thread. I have been eyeing a '21 F150..... but the Ford forum has a thread about rusted rear ends and exhaust systems.... Waiting for them to figure that out and leaning towards the powerboost hybrid with the 7.2kw battery/generator for a travel trailer and when power goes out with hurricanes. 



 

[Pacfanweb]

On 3/27/2021 at 9:08 PM, BamaBen said:

Been researching other trucks while I wait on GM to decide what they’re going to do..

 

Over at ramtrucks.com, their Rear Window Crack and Leak thread is up to 83 pages.  Sounds like Dodge has issues too.

 

One poster is on his 4th service appt and still is leaking.

Ford rear windows crack and leak, too.  They also leak in at the sliding window and the way it's made, you can't do anything but replace it.  I've diagnosed a bunch of those.  

They all have problems.  You just have to pick the one you want to deal with.  IMO a leaking back glass pales to having to look at that arse-ugly Ram front end, or an F-150 that you can't make a turn in a 10 acre field, AND they leak terribly and their sunroofs break a lot.  

 

So all in all, I'll stick with a GM for now.  

 

I will say, my 15 Sierra at about 94k is using some oil.  Too much, IMO.  Gotta find a way to deal with that, or it's going to be someone else's.   But the rest of it is solid. 

Edited March 30, 2021 by Pacfanweb

[BamaBen]

Ugh...and I was all excited about the 21 F150s.  Right now the best candidate seems to be a Tundra, but I despise the interior.  
 

GM got our letter yesterday, so we’ll see what the6 offer.

[RyanbabZ71]

Been through 4-5 good heavy rain storms since the fix in Feb and no leaks. I’m not super hopeful but glad it has held up


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[SilveradoRST]

2 hours ago, Pacfanweb said:

Ford rear windows crack and leak, too.  They also leak in at the sliding window and the way it's made, you can't do anything but replace it.  I've diagnosed a bunch of those.  

They all have problems.  You just have to pick the one you want to deal with.  IMO a leaking back glass pales to having to look at that arse-ugly Ram front end, or an F-150 that you can't make a turn in a 10 acre field, AND they leak terribly and their sunroofs break a lot.  

 

So all in all, I'll stick with a GM for now.  

 

I will say, my 15 Sierra at about 94k is using some oil.  Too much, IMO.  Gotta find a way to deal with that, or it's going to be someone else's.   But the rest of it is solid. 

Don’t mean to hijack.  Just a quick sidebar question.  What model years are known to have rear window leak in F150?

[Pacfanweb]

10 minutes ago, SilveradoRST said:

Don’t mean to hijack.  Just a quick sidebar question.  What model years are known to have rear window leak in F150?

2015-up