Jump to content

Rear Window Leak on 2020 3500HD Denali

Pate Services
 Share

Recommended Posts

Pate Services Enthusiast

Pate Services

Posted
Posted

Well I have had my truck for just over one week and just noticed a small wet spot on the top of the rear window on the drivers side. It's where the top plastic slider frame ends. If I look closely I can see a few verticle streaks in the glass from where it must have leaked previously. Under 300 miles and its going back to the dealer tomorrow.

  • Replies 37
  • Created
  • Last Reply

Top Posters In This Topic

Popular Days

Top Posters In This Topic

Popular Days

Popular Posts

Pate Services
Pate Services

Didn't notice any leaks in the past few rains but it poured today and it leaked in the same spot. Dealer is now ordering a new rear window. 

Pate Services
Pate Services

So today was the day my truck went in to get the second replacement window installed. They informed me they found a gap in the top bead of sealant that was from the last install. Rather than replace t

Stand By
Stand By

There are two issues. Make sure they take care of both. One is the window frame cracking. The other is the bolts for mounting the spoiler not sealing right.

sdelam Enthusiast

sdelam

Posted
Posted

I have a leaky window also, both sides of rear glass. Dealership says there are parts (self sealing nut?) that are back ordered and they wont pull the spoiler to do the fix until they get them. 

gearheadesw Senior Enthusiast

gearheadesw

Posted
Posted

So, bummer, sorry to hear this. Both the new 1500 and now the 2500's have leaks, truly WTF, why can't GM build a water tight vehicle?

Pate Services Enthusiast

Pate Services

Posted
  • Author
Posted

Got the truck back from dealer. There is a bulletin for the repair. Essentially they pull down the back part of the headliner and remove the rear spoiler. They then apply seam sealer to the top of the window seal where the water is getting in. I believe the issue is the plastic frame that the sliding window is in may have hairline cracks allowing water in between that and the window seal. Seems like a crappy fix but let's see if it holds. Worst part is they got some of the sealer on the spoiler. I asked them to clean it and they scuffed up the clearcoat in the process. They then had to buff it out. They also broke a clip in the headliner. I hate that a truck with 300 miles has to be torn apart for bullshit quality from GM. 

Pate Services Enthusiast

Pate Services

Posted
  • Author
Posted
11 hours ago, greatmizzou said:

Did the dealer fix it? Honestly they should do that stuff at their bodyshop and not the standard mechanic bay

Everything fixed and broken clip is ordered. I will know shortly after I wash it if the leak is resolved.

  • 2 weeks later...
ShotgunZ71 Senior Enthusiast

ShotgunZ71

Posted
Posted

MIne goes back tomorrow for another repair attempt per the GM Case Mgr. If this also fails, apparently the next step is a new rear window. 

 

Sure hope the new, upgraded ones are leak free for the life of the truck.

kylant Enthusiast

kylant

Posted
Posted

i hope they have fixed this issue from the factory. 

I have a truck coming. currently on the train. scheduled delivery is the 13th

ShotgunZ71 Senior Enthusiast

ShotgunZ71

Posted
Posted (edited)
On 8/5/2020 at 3:36 PM, ShotgunZ71 said:

MIne goes back tomorrow for another repair attempt per the GM Case Mgr. If this also fails, apparently the next step is a new rear window. 

 

Sure hope the new, upgraded ones are leak free for the life of the truck.

The next step is to replace the spoiler bolts with the upgraded bolts and washers. So, new spoiler, sealer, and now bolts and washers. GM knows that the new window is the true fix, but they want to hassle dealers to try things a piece at the time so see if other remedies work. I hate that the service departments and customers have to deal with the drawn-out process, simply because GM keeps trying to cheap out and the dealers don't get paid unless they follow those steps.

Edited by ShotgunZ71
Stand By Enthusiast

Stand By

Posted
Posted

There are two issues. Make sure they take care of both. One is the window frame cracking. The other is the bolts for mounting the spoiler not sealing right.

  • Thanks 1
doozer78 Enthusiast

doozer78

Posted
Posted

These leaks I keep hearing about is there a timeline for build dates that are affected by this? Are the more recent builds already Fixed? Just wondering so I know to keep an eye on things.

Sent from my SM-A705U using Tapatalk

  • Like 1
Camper Hauler Enthusiast

Camper Hauler

Posted
Posted
On 8/13/2020 at 7:50 PM, Stand By said:

There are two issues. Make sure they take care of both. One is the window frame cracking. The other is the bolts for mounting the spoiler not sealing right.

I've been trying to tell them the leak is ABOVE the window, is in the spoiler bolts. Water does not typically run up hill!

sdelam Enthusiast

sdelam

Posted
Posted

Just got mine back yesterday, might take the hose to it tonight to see what happens

 

Create an account or sign in to comment

You need to be a member in order to leave a comment

Create an account

Sign up for a new account in our community. It's easy!

Register a new account

Sign in

Already have an account? Sign in here.

Sign In Now
 Share
Go to topic listing

  • Latest Articles

  • Posts

    • lanaderay
      5 Best Slide Down Gameplay Tips! 

      By lanaderay · Posted

      Are you playing Slide Down endlessly but your score is still low? Are you constantly crashing into obstacles as the game speed increases? Don't worry, this article will share 5 invaluable tips to help you master the race and impress your friends. Golden Rules 1. Look one step further. The mistake of 90% of new players is only staring at their character. The secret of experts is to look towards the top of the screen (where the slide is about to appear). This gives your brain an extra 0.5 - 1 second to process the situation and determine the direction of movement before the obstacle approaches. 2. Use gentle movements; don't swipe too hard. Slide Down is very sensitive. Moving your finger too forcefully or with excessive amplitude will cause your character to be thrown off course or crash into a wall. Practise moving your finger with small, decisive, and precise movements. 3. Don't be greedy for gold in dangerous locations. Gold coins are tempting for buying skins, but life is more important. If you see a gold coin right on the edge of a cliff or next to a spike trap, ignore it. Our goal is a High Score, and your score only increases if you survive. 4. Make the most of Power-ups. During the slide, you'll encounter items like Magnets (attract gold) or Shields (temporary invincibility). Never miss them! Especially the Shield, it's your "get out of jail free card" to help you get through those deadly fast sections. 5. Stay calm when speed peaks. When your score exceeds 500 or 1000, the game speed will be very fast. At this point, don't try to think logically; let your natural reflexes work. Take deep breaths and don't panic. Apply these 5 tips to your next game, and your leaderboard will surely improve dramatically. Good luck climbing the Slide Down leaderboard!
    • lingyuair
      Why I Recommend a Desiccant Air Dryer for Cleaner, Drier Compressed Air

      By lingyuair · Posted

      If you use compressed air regularly, one problem you cannot ignore is moisture. Water in the air line can cause rust, unstable air pressure, poor tool performance, and even damage to sensitive equipment. That is why I highly recommend using a desiccant air dryer. A desiccant air dryer is designed to remove moisture from compressed air by using drying materials such as activated alumina or molecular sieve. Compared with basic water separators, it can achieve much lower dew points, making it especially useful for applications that require dry and stable air. For workshops, painting systems, pneumatic tools, CNC machines, laser cutting equipment, and industrial production lines, a desiccant air dryer can make a big difference. It helps protect equipment, improve air quality, reduce maintenance costs, and extend the service life of the whole compressed air system. Another advantage is reliability. Many desiccant air dryers are built for continuous operation and can maintain stable drying performance even in demanding environments. For users who care about long-term efficiency and equipment protection, this is a smart investment. When choosing a desiccant air dryer, I suggest paying attention to air flow capacity, working pressure, dew point performance, regeneration method, and maintenance requirements. A good model should match your compressor system and actual air consumption. Overall, if moisture is causing problems in your compressed air system, a desiccant air dryer is definitely worth considering. It is practical, efficient, and highly useful for anyone who needs clean, dry, and reliable compressed air.
    • Jsdirt
      2027 GMC Sierra: Official Discussion

      By Jsdirt · Posted

      My brand new 2007 Silverado's wax frame was rust from end to end partway through it's SECOND winter here in MA. That stuff is completely useless.    
    • Jsdirt
      2027 GMC Sierra: Official Discussion

      By Jsdirt · Posted

      I went another direction after losing a trailer tire, thanks to not being able to access air at ANY of the 5 gas stations and garages I stopped at prior, with a Toyota Tacoma onboard, 50 miles from the Canadian border. They were either out of order, access was blocked, or the hose a few feet too short and I couldn't get any closer without risking damage to someone's property.   https://postimg.cc/gallery/X5QJ55w
    • Another JR
      Remote Start Noise 2024 2500 HD Gas

      By Another JR · Posted

      I took a 12 second video on my iphone but the file is too big to upload. I will have to figure out how to extract the audio or just do another start with an audio recording. 

  • GM-Trucks.com Clubs

  • Popular Contributors

×
×
  • Create New...