Tailgate opening no notification

Pyrojodge · August 21, 2023

Just brought home my 2023 Denali and I already have a tonneau cover on it. I stopped for fuel in the rain and then drove probably 6+ miles to my destination. I'm unsure of if somehow I hit the button twice in my pocket or what, but it seems strange to have happened. When I got to our destination, I went to back into the parking spot and noticed that the camera was looking at the license plate instead of behind me. I'm worried about this becoming a problem because I usually carry my tool bags and such in the bed of the truck and would hate to have the gate open and I would have no idea since I can't see it in the rear view or mirrors. Anyone know why it would have opened or if GM can notify us on the newer vehicles? My 19 Silverado would let me know if the tailgate was done with a simple notification that I could dismiss. This is so far the only true issue with the truck. I've seen that there have been others with the issue of the multi pro tailgate opening on its own and I do pull at trailer on occasion and if that were to happen it would definitely F up the tailgate.

Traumajunkie46 · August 22, 2023

My 2021 pro tailgate erratically opens and sometimes switch doesnt work when pushed. I've noticed it seems to happen after a rain or washing. The top switch gets wet and shorts out. See Technical Bulletin # 23-NA-112. Needs the switch replaced.

Transient · August 22, 2023

I'm a little confused on 1 point. How could you not know if the tailgate is closed when looking in the rear view mirror? Is the "spoiler" looking ridge not visible in the mirror? I have a 2020 and have had 2 tonneau covers on my truck. One was the Rough Country trifold. The one I have now is a Retrax. With both tonneau covers closed, I was always able to tell if the tailgate was up. Was there a redesign of the top plastic trim piece I missed?

As for concern about the tailgate dropping while pulling a trailer, have you looked into the GM accessory that should prevent that from happening. Iirc, it's made by Curt, but don't quote me on that.

RonMexico53 · August 22, 2023

My 2021 Silverado started having this tailgate issue over this past weekend. I have an appointment in 2 weeks, assuming the fix will TSB 23-NA-112. I'll reply after the issue has been corrected.

Pyrojodge · August 23, 2023

On 4/20/2023 at 6:31 PM, Keith Dugger said:

Is there any mention of a battery drain on any trucks? I'm having the same issue with my keys as well. Now, there is a parasitic draw that is draining the battery. I go to pull the fuse for the theft system, there isn't one. It's supposed to be on the driver's side, on the side of the dash. I have an appointment at our GMC dealer for May 2nd.

Thank you.

23 hours ago, Transient said:

I'm a little confused on 1 point. How could you not know if the tailgate is closed when looking in the rear view mirror? Is the "spoiler" looking ridge not visible in the mirror? I have a 2020 and have had 2 tonneau covers on my truck. One was the Rough Country trifold. The one I have now is a Retrax. With both tonneau covers closed, I was always able to tell if the tailgate was up. Was there a redesign of the top plastic trim piece I missed?

As for concern about the tailgate dropping while pulling a trailer, have you looked into the GM accessory that should prevent that from happening. Iirc, it's made by Curt, but don't quote me on that.

My rear view mirror is a camera and no I can't see it. Hence my issue.

repairman54 · August 23, 2023

11 hours ago, Pyrojodge said:

My rear view mirror is a camera and no I can't see it. Hence my issue.

Flip the bottom lever over to regular mirror, then you can see it.

Edited August 23, 2023 by repairman54

GMCustomerService · August 28, 2023

On 8/21/2023 at 12:34 PM, Pyrojodge said:

Just brought home my 2023 Denali and I already have a tonneau cover on it. I stopped for fuel in the rain and then drove probably 6+ miles to my destination. I'm unsure of if somehow I hit the button twice in my pocket or what, but it seems strange to have happened. When I got to our destination, I went to back into the parking spot and noticed that the camera was looking at the license plate instead of behind me. I'm worried about this becoming a problem because I usually carry my tool bags and such in the bed of the truck and would hate to have the gate open and I would have no idea since I can't see it in the rear view or mirrors. Anyone know why it would have opened or if GM can notify us on the newer vehicles? My 19 Silverado would let me know if the tailgate was done with a simple notification that I could dismiss. This is so far the only true issue with the truck. I've seen that there have been others with the issue of the multi pro tailgate opening on its own and I do pull at trailer on occasion and if that were to happen it would definitely F up the tailgate.

This is certainly not what we like to hear, Pyrojodge. Please know, customer satisfaction is extremely important to us. Our team would be more than happy to take a closer look into the concerns with your 2023 GMC Sierra Denali's tailgate opening up on its own. To do so, please send an email to [email protected] with ATTN: Pyrojodge/GM Trucks in the subject line.

Please include your contact information, VIN, a brief description of your concern, and the name of your preferred dealership. We look forward to hearing from you. To learn more about GM’s Privacy Policy, please visit https://www.gm.com/privacy-statement.html. The information you provide may be monitored and recorded and is subject to the GM Privacy Statement.

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RonMexico53 · September 6, 2023

On 8/22/2023 at 9:47 AM, RonMexico53 said:

My 2021 Silverado started having this tailgate issue over this past weekend. I have an appointment in 2 weeks, assuming the fix will TSB 23-NA-112. I'll reply after the issue has been corrected.

Tailgate issue was fixed yesterday, TSB 23-NA-112 was the fix.

KKEMT72 · December 19, 2023

I had the exact same issue. Decided the first time it "could" have been one of us bumping the switch when we stopped in parking lot, as when we got out it was down. We knew it was up when we left home because I could see out the cameras. The next time this happened, unfortunately, told a different story. We were pulling our camper to an event in September. As I was driving in the area to park the camper, making the last turn of 3 (without stopping), I heard a CRUNCH!! Yep, it came down on the last turn and hit the jack on camper. Not a pretty site. I have attempted to email & contact GM since it happened. I haven't gotten 1 single response.

Last week I FINALLY found out that the first week in November a bulletin was posted by GM stating an issue with switch that they are replacing. Have one on order at dealer now. Now I wait as the dealership is going to fight for my damage to be fixed as well. Such a disappointment as I'm on my 3rd new GMC Truck and can't get any sort of a response on this. Customer Service should be a priority, but sure doesn't seem to be with this from all I've read on the same issue. Hope you got yours fixed!!

Mshawn · December 20, 2023

I believe but I could be wrong but there is a bulletin on this problem

Borntorun · December 21, 2023

Will check out this TSB as I have a 2024 1500 Sierra and have noticed my tailgate being down without using buttons a few times in the last 3 months from delivery. One time was about 20 minutes after washing truck. Thanks for TSB number.

GullLakeMi · April 5

Did you have to prove to dealer to get fixed or will they address simply because you bring it up?

Jus Cruisin · April 5

11 hours ago, GullLakeMi said:

Did you have to prove to dealer to get fixed or will they address simply because you bring it up?

Pretty sure there's a recall now. Call your dealer and they can tell you if your truck is in it.

Parnelli · May 20

This has happened to me 3 times.....although like you, the first time I went in to get groceries, and when I can back my tailgate was down......thinking the key fob button was pushed accidentally in my pocket......fortunately nothing was in the back. Second time, a bit more serious.......I was driving for over 100 miles on my trip, when I came to a near stop in heavy traffic on the expressway.....then when we resumed, another car flagged be down, and sure enough, my tailgate was down......and garbage was spread over the last mile......fortunately nothing of value and did not damage vehicles behind me. I was not so lucky with my truck......I had ice build up on the bumper, so when it went down, it dented by tailgate which will have to be addressed when the problem is resolved. Third time, after having it looked at by a local dealer, I left to go home, stopped for gas including 3- 5 gallon cans in the back......went a few miles, having the tailgate open.....and going around a roundabout intersections the 3 full cans of gas were spread out across the road.....fortunately no gas escaped and no one was injured. A concerned citizen tracked me down, and let me know the situation. I am so glad it wasn't my hunting rifles scattered down the road, and certainly am glad this hasn't caused any injuries or damage that I know about.

I don't understand why there is not any indication of the gate being closed......green light or red light (the gate is open)on the button....there seems to be a spot for it. Although there is a known issue, a gate ajar warning of some time is needed, this is a major liability for GM and for the owners of these vehicles.....I own a 2023 Sierra 1500 AT4.

Parnelli · May 20

7 minutes ago, Parnelli said:

This has happened to me 3 times.....although like you, the first time I went in to get groceries, and when I can back my tailgate was down......thinking the key fob button was pushed accidentally in my pocket......fortunately nothing was in the back. Second time, a bit more serious.......I was driving for over 100 miles on my trip, when I came to a near stop in heavy traffic on the expressway.....then when we resumed, another car flagged be down, and sure enough, my tailgate was down......and garbage was spread over the last mile......fortunately nothing of value and did not damage vehicles behind me. I was not so lucky with my truck......I had ice build up on the bumper, so when it went down, it dented by tailgate which will have to be addressed when the problem is resolved. Third time, after having it looked at by a local dealer, I left to go home, stopped for gas including 3- 5 gallon cans in the back......went a few miles, having the tailgate open.....and going around a roundabout intersections the 3 full cans of gas were spread out across the road.....fortunately no gas escaped and no one was injured. A concerned citizen tracked me down, and let me know the situation. I am so glad it wasn't my hunting rifles scattered down the road, and certainly am glad this hasn't caused any injuries or damage that I know about.

I don't understand why there is not any indication of the gate being closed......green light or red light (the gate is open)on the button....there seems to be a spot for it. Although there is a known issue, a gate ajar warning of some time is needed, this is a major liability for GM and for the owners of these vehicles.....I own a 2023 Sierra 1500 AT4.

I meant to say the tailgate opened unexpectedly and the gas cans went flying out the back on my way home, just so we are clear.

The other recommendation I would have, is move the button away from the emergency flasher button.......when you are rapidly trying to push this button is a hurry given the situation, it is too easy to hit the tailgate button.