Rear window leak

lapoolboy · December 26, 2019

1 hour ago, ShamrockShooter said:

I thinking this has to be a freeze thaw issue.

Bingo. If the truck didn't leak for a while and then starts all of the sudden, it is being acted on by outside factors. It's either sealed or it's not.

Let's take a poll to verify this theory...where are all these leaking trucks located geographically?

Edited December 26, 2019 by lapoolboy

ShamrockShooter · December 26, 2019

Out of curiosity,

Since this issue seems to affect all build dates. Has anyone noticed if this is happening to both US and Mexico assembled trucks? Majority I've seen here seem to be the Ft Wayne builds.

Both of my trucks were 1Vin ft Wayne

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ShamrockShooter · December 26, 2019

Bingo. If the truck didn't leak for a while and then starts all of the sudden, it is being acted on by outside factors. It's either sealed or it's not.

Let's take a poll to verify this theory...where are all these leaking trucks located geographically?

Or the plastic frame of the rear slider cracked from hitting a pot hole or the truck flexing pulling in or out of my steep driveway

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lapoolboy · December 26, 2019

Just now, ShamrockShooter said:

Or the plastic frame of the rear slider cracked from hitting a pot hole or the truck flexing pulling in or out of my steep driveway

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Both possibilities I suppose but they are still outside forces. Do you notice any cracking?

OnTheReel · December 26, 2019

I dunno. Mine was fine throughout all of last winter. Didn’t leak until August. Just completely out of the blue. Definitely wasn’t any freezing or major temperature swings going on.

If I were to hazard a guess, the truck just ain’t stiff enough. The roof area flexes over time and eventually breaks the seal and/or cracks the window channel.

Still can’t think of any explanation for why the issue is still happening though. The window was allegedly redesigned and suppliers changed. All I know is that the “first year of a new redesign” card is expired. 100% unacceptable that a thread created in November of 2018 is still claiming victims 13 months later, on the next model year!

f8l vnm · December 26, 2019

Big time rain in so cal tonight. Well see how the new fix goes GM just did on my rear leak. I’m overseas , call the wife tomorrow to check k on my truck. Cmon GM I hope you fixed it right.

JohnCasey · December 26, 2019

7 hours ago, Tomtom87 said:

Out of curiosity,

Since this issue seems to affect all build dates. Has anyone noticed if this is happening to both US and Mexico assembled trucks? Majority I've seen here seem to be the Ft Wayne builds.

Mine is a Mexican build and I’m in Easten NC.

Edited December 26, 2019 by JohnCasey

Centrebaseball · December 26, 2019

7 hours ago, lapoolboy said:

Bingo. If the truck didn't leak for a while and then starts all of the sudden, it is being acted on by outside factors. It's either sealed or it's not.

Let's take a poll to verify this theory...where are all these leaking trucks located geographically?

Ft Wayne build.
kentucky

leaked November 1 - still hadn’t had any freezes or temp changes. And it is garage kept at night

ShamrockShooter · December 26, 2019

That makes me think pulling in and out of my steep driveway every day which causes quite a bit of flex in the truck might be what broke the seal or plastic frame on my back window. Just the morning fog/dew on the truck today was enough to make it start dripping in so must be a big opening.

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JohnCasey · December 26, 2019

I'm inclined to think its a flexing issue with the body too. We've had a similar issue with a Jet Vac truck of ours with the frame flexing and ripping the radiator apart. We crossed braced the radiator with 1/4" steel and haven't had an issue with that one since. The dealership is swearing they are testing it the day after they fix it but it leaks after I drive it 10-15 miles and cross over two railroad tracks.

econometrics · December 26, 2019

Well, just dropped my RST off for the leak. It was dripping when I dropped it off, so that was an easy explanation.

Largest volume Chevy dealer in America, and “dealer of the year” in 2018, and my service advisor said this is the first leaking window he has seen. Oh, boy.

Brileavi · December 26, 2019

1 hour ago, econometrics said:

Well, just dropped my RST off for the leak. It was dripping when I dropped it off, so that was an easy explanation.

Largest volume Chevy dealer in America, and “dealer of the year” in 2018, and my service advisor said this is the first leaking window he has seen. Oh, boy.

Just dropped mine off dealer said they have done 4 already

econometrics · December 26, 2019

2 hours ago, Brileavi said:

Just dropped mine off dealer said they have done 4 already

I'm 100% sure the dealer has done many of these repairs, so maybe my service advisor himself is new or had not seen one yet.

ShamrockShooter · December 26, 2019

Well, just dropped my RST off for the leak. It was dripping when I dropped it off, so that was an easy explanation.

Largest volume Chevy dealer in America, and “dealer of the year” in 2018, and my service advisor said this is the first leaking window he has seen. Oh, boy. [emoji2359]

Please tell me you didn't take it to Bob Johnson Chevy in Rochester.

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