2021 GMC Bad Lifter Problem Blown Engine

Mark Frederick · July 30, 2021

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.

seamus2154 · August 16, 2021

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 · August 16, 2021

If your engine is blown lifters aint gonna help ya!

bjr2020 6.2 · August 17, 2021

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

JimCost2014 · August 17, 2021

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 August 17, 2021 by JimCost2014

bjr2020 6.2 · August 17, 2021

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…….

JimCost2014 · August 17, 2021

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....

Mark Frederick · August 17, 2021

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

PorkiePie · August 19, 2021

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.

blkchevy1986 · December 28, 2021

l

Edited December 30, 2021 by blkchevy1986
Repair completed

Silverado4x4 · December 28, 2021

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 December 28, 2021 by Silverado4x4

JimCost2014 · December 28, 2021

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 · January 2, 2022

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 · January 3, 2022

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.

Jordan Bolster · December 5, 2024

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.