Aaron Ch

This happened to me. I have a 2017 Denali HD. Basically, there is an opening at the rear of the antenna. They need to replace it with a new antenna which has the opening at the front of the antenna. Mine was covered under warranty.

Sure, it would be nice if GM fixed my issue but that's not my primary concern. I have a son that sits in the backseat. If GM fixes the issue, then that would be awesome. However, it sounds like your recommendation would be to negotiate with GM on an individual basis. I understand that approach, but what about all of the other parents that don't even know about this yet and are still placing their children in rear (and forward) facing child seats? Again, my concern is for the children out there; not just to save a thousand bucks. I am not interested in threatening with lawsuits or placing demands on GM. I am interested in communicating the issues with everyone involved. As you can see, this thread has been going on for some time yet there is no public resolution. What is your recommendation so that all owners (not just the ones with damages) are able to resolve this safety issue?

Also, here is a phone number to GMC customer support. I was actually on the phone with them today discussing the issue. They said they are looking into it. Here is the contact information: GMC Customer Assistance Phone Number:1-866-790-5600 [email protected]

PLEASE REPORT THIS TO: https://www-odi.nhtsa.dot.gov/VehicleComplaint/ All of us with the same issue have reported it. Before trading it in, contact General Motors directly. This is not a one-off issue and several of us are experiencing it. I contacted GMC through their chat feature and they are currently investigating it. I also directed them to this forum. You should do the same. I have a son who sits in the back so I want to do whatever I can to make sure that children aren't injured because of this safety hazard.

That is shitty. Please report the issue: https://www-odi.nhtsa.dot.gov/VehicleComplaint/ All of us have been reporting it. Hopefully this will give it the exposure it deserves.

Thanks for posting this!

lol.. well, I also have the onstar antenna leak too! They have my "new and improved" antenna at the shop waiting for me. You should just tell us the fix or secretly send an Amazon link to the $5 part so we don't have to worry about our cab going up in flames Man, GM is becoming a super awesome company. Our Subaru had a shattered bottom windshield because of the wiper defrosters. It was purchased used and out of warranty YET THEY STILL PAID TO FIX AND REPLACE THE WINDSHIELD. I felt proud to have interned at GM a while back.. not so sure anymore...

Hmmm.. If the TSB said that an approved fix for that leak is that little spongey looking thing, then why is 1SLOW1500 saying that it isn't an approved fix? I must be missing something here....

lmao.. Definitely not coming off as an asssss hole! We do appreciate your insight so thanks!

Understood. Being in a technical field, you'd be surprised how often the OBVIOUS root cause is actually not the root cause. Anyway, I believe that GM should be investigating this issue and should fix our vehicles. I don't want an extended warranty in case something happens before it expires. I'm with you. Right now, I am afraid that my rear glass is a ticking bomb. I have the rear defroster auto setting turned off but that glass is STILL warm in the middle after I remote start the truck.

I am having trouble following. Are you saying that GM did identify the root cause for the smoking defroster followed by subsequent shattered window? If yes, then what is it? I agree that it is unreasonable for the charges to fall on the consumers. In answering BPIRKOLA's question, I believe that if it is a known issue, then it should just be fixed. I don't want an extended warranty HOPING that I don't have the issue after it expires.

I don't know if anyone on this thread is qualified and/or has even performed the necessary troubleshooting to conclude that the leak is the root cause of the defroster malfunction followed by shattered glass. Has GM provided the root cause for this issue?

Ah wow, thanks for sharing that.

I have a water leak coming in from my OnStar antenna :'( but not sure that is related. They are going to replace the antenna with a new design. Apparently, the old design has an opening in the rubber where water can flow in... I've heard of leaks at the back of the cab if the egress filters fall off. There are two squares between the bed and cab that allow air to flow out when the cab doors are closed. If those come off, then water would enter the cab (but that is a couple feet below the rear window)... Thanks for letting us know. You should also report it to: https://www-odi.nhtsa.dot.gov/VehicleComplaint/

Really hope your service department can get to the bottom of it. I saw smoke coming out of the black box on the sliding window but shut it off in time. I also smelled a burning smell. You and I are the only lucky ones to have avoided a shattered window.... so far.

Well, there's a huge thread of people that 'this never happens' to.... I'd have them investigate the defroster before just taking on the bill...

Oh man! Please tell me you're going to submit a complaint with https://www-odi.nhtsa.dot.gov/VehicleComplaint/?!?! This is some of the BEST proof we've come across for our issue. GM has to step up with this problem especially with your proof.

Also, thanks for filing the complaint!

I agree with the other post about glass and rates. If your state doesn't have 'glass' protection, then it would go under comprehensive. Comprehensive claims don't count against you. The only time they may become an issue is if you have a string of them over a short period of time. I have a lower comprehensive deductible than my collision; the price difference was not very significant.

Because GM should be paying for it; not our insurance.

I agree with this post... SOMETHING BURNED!!!!!! Unless you were lighting firecrackers in your backseat, then whatever burned is most likely the cause of the issue. I'd be elevating the crap out of this.

Pretty sure there is no difference between the 2017 and 2015 :P.. Thanks for the update!

Well, umm... that doesn't look like it's supposed to be there.. Did the dealer notice that? The "point of impact" was a damned mini blow torch caused by the defroster... Also, did you report it? If not, PLEASE REPORT IT TO: https://www-odi.nhtsa.dot.gov/VehicleComplaint/ There is a section in your report where you can attach pictures. You are one of the few who actually has evidence that there is some kind of electrical/fire damage. All we have is the aftermath, and unfortunately, is not proof.

haha.. i've had fewer problems with a $20K Sonata than I have had w/ a $70K truck! -_-

I agree with you.. Especially, if you have a baby in a rear-facing child seat like I do! -_- Thank you for providing that link. I didn't even know it was an option to report.