Jump to content

2021 GMC Bad Lifter Problem Blown Engine

Mark Frederick
 Share

Recommended Posts

Mark Frederick New Member

Mark Frederick

Posted
Posted

I have a 2021 Sierra Denali 1500 6.2L. Lifer problem caused complete engine failure at 13000 miles. Dealer it was towed too had 7 more in service same problem. So if they only replace 4 lifters. Obviously this problem is widespread.

 

Those of you that have had this same nightmare.

 

Does the other side fail?

 

Is the replacement the same faulty lifters that caused the failure?

 

Any feedback appreciated.

  • 3 weeks later...
seamus2154 Enthusiast

seamus2154

Posted
Posted

Do a search. This is all over the forum threads.

 

No they are new lifters, and yes the others will fail, fight for all lifters replaced.

eppieguy Senior Enthusiast

eppieguy

Posted
Posted

If your engine is blown lifters aint gonna help ya! 

bjr2020 6.2 Enthusiast

bjr2020 6.2

Posted
Posted

When was your truck built? Mines 7-2020 no issues so far 11k on truck. This is making me nervous though 

JimCost2014 Senior Enthusiast

JimCost2014

Posted
Posted (edited)
52 minutes ago, bjr2020 6.2 said:

When was your truck built? Mines 7-2020 no issues so far 11k on truck. This is making me nervous though 

Lifer problem caused complete engine failure at 13000 miles. Dealer it was towed too had 7 more in service same problem. 

 

Wouldn't worry too much, if something does fail, you have your factory warranty to fix it.

 

You get a lot of "one and done" posts here, just to stir the pot. Doubt very much if any dealer is just telling him exact numbers of failures, if they even have had any at all. Easy to embellish any story behind your keyboard. like your engine being damaged beyond repair, but they are going to change one bank of lifters, OP said 4, so guessing just 2 cylinders🤔😬

 

 

 

Edited by JimCost2014
  • Thanks 1
bjr2020 6.2 Enthusiast

bjr2020 6.2

Posted
Posted

If that is the case lol some ppl must have a twisted sense of humor to pop on here and say stuff like that. Must love to stir the pot…….

  • Like 1
JimCost2014 Senior Enthusiast

JimCost2014

Posted
Posted
8 minutes ago, bjr2020 6.2 said:

If that is the case lol some ppl must have a twisted sense of humor to pop on here and say stuff like that. Must love to stir the pot…….

Trolls usually don't discriminate against the pot they are stirring. Any pot will do.

 

COVID has created a lot of spare time for the "spare parts" of the world....

  • Like 1
PorkiePie New Member

PorkiePie

Posted
Posted

My turn for lifter failure at 7,246 miles on the wife's Escalade Sport not on my AT4.

 

Happened this week during slow acceleration at around 40mph, car started shuddering, engine warning light flashed, traction control light came on. On the dash got a number of warnings (Service Stabilitrak, Rear Axle System Off & Service Traction Control). Also the air suspension dropped to 'improve stability'. Additional noise from under car from transmission tunnel. 

 

More importantly, hence the post here, the recovery truck driver said this was the 5th GM lifter failure he had done recently when I mentioned it was probably lifter issue (no way of confirming his comment but it was an interesting response from him). So I suspect issue is pretty widespread when additionally you consider the replacement parts are on backorder (dealer has found some from another dealer and due for delivery next week). Overall will be out of service for 2 weeks.

The AT4 (built 12/20) has done just 6k miles & I hope I am not about to see the same on the truck.

Frustrated with GM but have to say dealership have been great.

  • 4 months later...
Silverado4x4 Senior Enthusiast

Silverado4x4

Posted
Posted (edited)
On 8/16/2021 at 10:33 PM, JimCost2014 said:

Lifer problem caused complete engine failure at 13000 miles. Dealer it was towed too had 7 more in service same problem. 

 

Wouldn't worry too much, if something does fail, you have your factory warranty to fix it.

 

You get a lot of "one and done" posts here, just to stir the pot. Doubt very much if any dealer is just telling him exact numbers of failures, if they even have had any at all. Easy to embellish any story behind your keyboard. like your engine being damaged beyond repair, but they are going to change one bank of lifters, OP said 4, so guessing just 2 cylinders🤔😬

 

 

 

Yup I was thinking the same thing sort of, why is it that all the people that post this problem are new members are they going to google doing a search then joining just to post this? I find it kinda strange trust me iam not saying its made up but I think some people just post this problem just to stir the pot and it didn't happen to them. Just like the big rush on oil cooler lines blowing off there for awhile that thread was dumped on by so many posts about the issue for weeks then all the sudden no more problems with the oil cooler lines again most were new members. Maybe iam wrong but it does seem strange.

 

I posted this when the rush of oil cooler lines blowing off. Iam good friends with the shop manager at our local dealership and ask him if he has seen any problems with the line blowing off and he said no but he has heard but none has came into the dealership shop for the issue.

Edited by Silverado4x4
  • Like 2
JimCost2014 Senior Enthusiast

JimCost2014

Posted
Posted
On 8/16/2021 at 9:54 PM, Mark Frederick said:

Here is what is going on. Why this guy is still happy I have no idea. 
 

 

Because he made a video of himself🤔😬

 

Created his own "15 minutes of fame"!!!

seamus2154 Enthusiast

seamus2154

Posted
Posted
On 12/28/2021 at 5:37 PM, Silverado4x4 said:

Yup I was thinking the same thing sort of, why is it that all the people that post this problem are new members are they going to google doing a search then joining just to post this? I find it kinda strange trust me iam not saying its made up but I think some people just post this problem just to stir the pot and it didn't happen to them. Just like the big rush on oil cooler lines blowing off there for awhile that thread was dumped on by so many posts about the issue for weeks then all the sudden no more problems with the oil cooler lines again most were new members. Maybe iam wrong but it does seem strange.

 

I posted this when the rush of oil cooler lines blowing off. Iam good friends with the shop manager at our local dealership and ask him if he has seen any problems with the line blowing off and he said no but he has heard but none has came into the dealership shop for the issue.

Yeah, but alot of people only post or come to a forum when they have a problem. Then look to see if it is an isolated issue? Trust me this lifter issue on the 2021 is a huge issue. I went to rent a 2021 suburban from Enterprise months back. They had to bring it from another location to us. As we stood in front they pulled up and the lifter let go just a block away. 6000 miles on it. We were going cross country, this could have been a disaster. Well they called over to the airport where there were more 21 suburbans and 2 were down for the same reason!!! We had to wait till later in the day for another one. We did 9000 miles on it in 30 days it had 15000 on it when we got it. No issues but it was on my mind out in the middle of nowhere! GM penny pinched on the wrong part. If I spent 80K on a new Yukon and had this happen I would lose my cookies. We bought the 3.0 diesel and love it. When things get normal, we will get a Yukon XL with the 3.0, its a great motor with insane fuel mileage.

Kilgore Trout Enthusiast

Kilgore Trout

Posted
Posted
On 12/28/2021 at 3:37 PM, Silverado4x4 said:

Yup I was thinking the same thing sort of, why is it that all the people that post this problem are new members are they going to google doing a search then joining just to post this? I find it kinda strange trust me iam not saying its made up but I think some people just post this problem just to stir the pot and it didn't happen to them. Just like the big rush on oil cooler lines blowing off there for awhile that thread was dumped on by so many posts about the issue for weeks then all the sudden no more problems with the oil cooler lines again most were new members. Maybe iam wrong but it does seem strange.

 

I posted this when the rush of oil cooler lines blowing off. Iam good friends with the shop manager at our local dealership and ask him if he has seen any problems with the line blowing off and he said no but he has heard but none has came into the dealership shop for the issue.

Totally agree.  

  • 2 years later...
Jordan Bolster Enthusiast

Jordan Bolster

Posted
Posted
On 7/29/2021 at 9:52 PM, Mark Frederick said:

I have a 2021 Sierra Denali 1500 6.2L. Lifer problem caused complete engine failure at 13000 miles. Dealer it was towed too had 7 more in service same problem. So if they only replace 4 lifters. Obviously this problem is widespread.

 

Those of you that have had this same nightmare.

 

Does the other side fail?

 

Is the replacement the same faulty lifters that caused the failure?

 

Any feedback appreciated.

Yes it is general motors hidding there true problems not standing over it 

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

    • Grumpy Bear
      Gas Prices

      By Grumpy Bear · Posted

      Jumped up 15 cents yesterday. $4.15
    • Chuck FB
      Correct way to service 2024 l8t allison trans?

      By Chuck FB · Posted

      I have never seen GM instructions for the other trucks as per the HD with the 6 speed or the half tons but had got the impression that the HD trucks with the 6 speed were not having the same problem that the 10 speed and pan presented. Also video that I have seen of the HD 10 speed with the gas engine starting in 2024 model year showed that it was a real struggle to even make it work when pulling down hard on the exhaust after undoing the exhaust hanger bracket on the side of the transmission as after all there is little room for the pipe to even go down behind the Y joint as it soon would hit a frame cross member. Also that they had tried just like I did with the gasket off and no way was that pan coming out any way they tried to manipulate the pan. From that as well as the local transmission shop talking about the pain in the rear issue, I was not expecting my pan to come out because GM shows it was not even intended to come out without dealing with the exhaust piping.    It would be nice to claim, here's what you do and its easy to remove the pan guaranteed on any HD truck with the gas 10 speed but dollars to donuts the next guy trying what I did would not have the same luck as the exhaust was just manufactured slightly different and be pissed off at my claim that the pan comes out with no issue. Its more of a try and see if your particular truck might work like mine did .... or not !. 
    • carkhz316
      Correct way to service 2024 l8t allison trans?

      By carkhz316 · Posted

      Sorry I didn't see this until now, but it works on both the 6 speed and 10 speeds, as well as all the half tons too.
    • 1998sleaze
      Engine vibration after motor mount replacement.

      By 1998sleaze · Posted

      Hello, I have a 2018 GMC Sierra 1500 that I recently changed both motor mounts on due to the driver's side being blown out. After replacement I seem to have a steady vibration that I can feel in the pedals and the back of the seat. At this point I'm convinced that the aftermarket "Anchor" branded mounts I used are not performing as well as OE, the only real reason I ended up using the mounts in question was because my local dealers were out a few months to get a Driver's side mount. I've tried "Neutralizing" the mounts according to the motor mount TSB published for these truck to no avail. My trans mount is also in great shape and seems to be absorbing vibrations swimmingly. As far as I can tell there is no issues idling, my idle RPM is steady and I've recently put GM plugs and wires on, however, I have not cleaned the throttle body or intake valves. Any one else have a similar experience with aftermarket mounts? Patience certainly is a virtue that I wish I exercised here. Thank you!
    • CamGTP
      Winter Returned

      By CamGTP · Posted

      I still saw people out for runs, on their bikes/motorcylces, jeeps with the doors off driving around here the past 2 days. I guess we are just used to it here haha.   Tasted like a bonfire the last 2 days.

  • GM-Trucks.com Clubs

  • Popular Contributors

×
×
  • Create New...