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Tailgate spontaneously opening

jsward12
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Jettech1 Senior Enthusiast

Jettech1

Posted
Posted
On 3/2/2023 at 10:36 PM, Pryme said:

seals might not help with those two stupid holes on top of the tailgate. I filled those with waterproof silicone.

Can you provide a pic of exactly where you siliconed those holes so I can do the same thing please?

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waltman
waltman

I have had my cover off and can confirm the switch is underneath the holes, another reason to plug the holes is the switch and linkage will freeze in the winter after getting soaked.

Pryme
Pryme

Did anyone ever have a problem with a good old fashioned manual pull tailgate? Yeah me either. Sometimes reinventing the wheel is unnecessary. I wish my truck had a manual old handle. 

Mardo
Mardo

I disagree, I love the tailgate. I've always driven a Ford F150 and decided to try an AT4. One of the things I like the best is the tailgate. If I'm hauling dogfood or anything in the bed it makes it

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Pryme Senior Enthusiast

Pryme

Posted
Posted (edited)
On 3/4/2023 at 12:11 AM, Jettech1 said:

Can you provide a pic of exactly where you siliconed those holes so I can do the same thing please?

It’s the two tiny holes on top of the tailgate in that little “handle” pocket or whatever it is in the middle. I see zero need for that pocket let alone holes to allow water to drain into the tailgate. 
 

I just put a dab of clear silicone in them and wiped it off flush

Edited by Pryme
Jettech1 Senior Enthusiast

Jettech1

Posted
Posted
13 minutes ago, Pryme said:

It’s the two tiny holes on top of the tailgate in that little “handle” pocket or whatever it is in the middle. I see zero need for that pocket let alone holes to allow water to drain into the tailgate. 
 

I just put a dab of clear silicone in them and wiped it off flush

I'll go look and thank you!

 

  • Like 1
Pryme Senior Enthusiast

Pryme

Posted
Posted
4 hours ago, Jettech1 said:

I'll go look and thank you!

 

I mean that little pocket literally serves no purpose. It’s not even shaped to be a handle so I’m not sure what it is. 

gemarsh Senior Enthusiast

gemarsh

Posted
Posted
On 3/4/2023 at 12:11 AM, Jettech1 said:

Can you provide a pic of exactly where you siliconed those holes so I can do the same thing please?

1651682498_Screenshot_20230225_223254_SamsungNotes.thumb.jpg.ec26e1c83384d0d803a3b517b7fc74cc.jpg

Dr1ft3r Enthusiast

Dr1ft3r

Posted
Posted

I'm pretty sure the holes are meant to allow water to drain out in the event the truck is sitting for a long time after it was filled with rainwater.

Pryme Senior Enthusiast

Pryme

Posted
Posted
1 hour ago, Dr1ft3r said:

I'm pretty sure the holes are meant to allow water to drain out in the event the truck is sitting for a long time after it was filled with rainwater.

Why even have it is my point? And I don’t want water running into my tailgate from the top. I park in the garage and I’ve only had water in there a couple times standing so it just comes out when I open the tailgate. 

  • Like 1
Dr1ft3r Enthusiast

Dr1ft3r

Posted
Posted
5 hours ago, Pryme said:

Why even have it is my point? And I don’t want water running into my tailgate from the top. I park in the garage and I’ve only had water in there a couple times standing so it just comes out when I open the tailgate. 

 

I get it. I'm just saying that I'm pretty sure that's why the holes were there. As for functionality, I use mine as a handle to pull the tailgate open since there's no place to grip the tailgate with my cover on top unless I open the cover first. The weather seal on the tailgate from the cover prevents the tailgate from opening on it's own.

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Hurtfully New Member

Hurtfully

Posted
Posted

Is anyone else having issues with tailgate opening on there 2021 Chevy Silverado 1500? I just had it happened to me as I was stepping over tailgate to get out of bed of truck 

  • 2 weeks later...
TKO New Member

TKO

Posted
Posted (edited)

So I have a 2021 GMC Sierra Denali 3500 with approximately 35K miles.

This same problem came up about 8 months ago when the tailgate opened on its own overnight in my garage.

In the morning, I opened the garage door and heard squealing sound of the metal in the overhead garage door hitting and scraping the tailgate that had opened sometime in the night.

There were minor scratches as a result. I took it in to get it fixed under warrantee.

The dealer tried to find the problem but ended up replacing the switch on the tailgate.

They buffed the scratches except for one scratch that they could not.

I was going on a major trip so I accepted their half-ass solution leaving a almost new 80k truck with a small scratch due to no fault of mine.....

Now 8 months later, its doing it again.

This is what having a flagship vehicle from GM is like....

 

So as a follow-up: I took it to a dealer and while I was talking to the manager and my service advisor to explain what was happening, the Truck started clicking the door handle relay repeatedly while flashing the backup lights as if it was possessed. At least they saw firsthand what the problem was!

After explaining that few months ago, both the switches were replaced for the same problem, I left hoping they will find something concrete. I even suggested they replace the entire harness going from the switch to the Engine Bay this time.

Next day picked up the truck.

Was told by the Manager that they changed both switches and that I should reschedule an appointment to fix the paint scratches on the rear door caused by the door hitting my Garage door when it opened on its own.

 

 

Edited by TKO
gemarsh Senior Enthusiast

gemarsh

Posted
Posted
7 hours ago, TKO said:

So I have a 2021 GMC Sierra Denali 3500 with approximately 35K miles.

This same problem came up about 8 months ago when the tailgate opened on its own overnight in my garage.

In the morning, I opened the garage door and heard squealing sound of the metal in the overhead garage door hitting and scraping the tailgate that had opened sometime in the night.

There were minor scratches as a result. I took it in to get it fixed under warrantee.

The dealer tried to find the problem but ended up replacing the switch on the tailgate.

They buffed the scratches except for one scratch that they could not.

I was going on a major trip so I accepted their half-ass solution leaving a almost new 80k truck with a small scratch due to no fault of mine.....

Now 8 months later, its doing it again.

This is what having a flagship vehicle from GM is like....

 

 

Are the 2 holes filled? I hope you respond with a no.

4x4Hank Enthusiast

4x4Hank

Posted
Posted
On 3/27/2023 at 12:27 PM, TKO said:

So I have a 2021 GMC Sierra Denali 3500 with approximately 35K miles.

This same problem came up about 8 months ago when the tailgate opened on its own overnight in my garage.

In the morning, I opened the garage door and heard squealing sound of the metal in the overhead garage door hitting and scraping the tailgate that had opened sometime in the night.

There were minor scratches as a result. I took it in to get it fixed under warrantee.

The dealer tried to find the problem but ended up replacing the switch on the tailgate.

They buffed the scratches except for one scratch that they could not.

I was going on a major trip so I accepted their half-ass solution leaving a almost new 80k truck with a small scratch due to no fault of mine.....

Now 8 months later, its doing it again.

This is what having a flagship vehicle from GM is like....

 

 

Sorry to hear that your bad switch resulted in your damaged tailgate. I’ve been waiting going on 3 weeks for a second inner tailgate switch. Including the original that came on the truck this will be the third switch. It’s incredibly irritating to both not be able to use one of the best features of the MultiPro tailgate, the step that makes it much easier to get into the bed and, the fact that once the switch arrives (or Christmas 2023 which we come first) I will again have to spend my time to take my truck into the dealer for the repair. I wonder if GMC/Chevrolet has issued a TSB regarding switch failure on their tailgates? 

Nick Avila Jr. New Member

Nick Avila Jr.

Posted
Posted

My 2021 Denali 3500 tail gate open randomly also! Found out that when it rains or snow it opens.. I’m in mn gmc has replaced my switch 4-6 times and also the switch inside dash… 

(2) weeks ago now it’s back to opening randomly  have a strap on my tail gate! Not sure what to do .. $80,000 truck and tail gate is ruining my love for this truck!!

come on gmc fix this!!!

 

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