2022 6.2 engine failure.

[repairman54]

I guess I got a good one, window sticker says engine source US. 21k miles on my '23, no issues with anything. 

[James Sommer]

2020 GMC Sierra AT4 6.2, purchased end of 2020 new

 

2-5095 K miles no oil issues

 

5095-10804 miles needed to add 2 quarts before scheduled oil change to bring up to full (oil add indicator came up on the DIC)

 

10804-15652 miles no issue

 

15652-19194 miles needed to add 1 quart to bring up to full (oil add indicator came up on the DIC) oil life monitor still shows 48% which means that I would not be due for an oil change for another 2 months or so.

 

19194-20600 miles DIC indicates add oil, oil life indicator reads 25%.

 

32K lifer knock, replaced all on left side

 

34K random misfire left side, fouled plug

 

34.5K noise, loss of power, black smoke, misfile and all types of engine messages

 

New engine installed along with external oil cooler and all oil lines due to scores in the cylinder walls, scored bearings and cylinder #7 had all of the ring gaps within .25 of each other. Dealer had the vehicle almost 4 weeks and when I picked up it ran perfectly. Put on 4K miles and had the oil changed at the dealer to document that the service was performed and have my fingers crossed that this does not happen again. Within the first 1K miles I posted my best fuel economy if you are to believe the DIC numbers indicating that there were some issue with the original engine. GM would not extend the 5 year 60K drive line warranty as they replaced the entire engine. Although not as quite as my 2019 6.2 Yukon Denali the engine is very smooth and the idle is steady.

 

 

[joe from kcmo]

2022 Chevy Z71 Suburban 6.2L same thing happened to me at 19,000 miles.  Wife baby's the vehicle.  Woke up to move her car and had a sudden low engine knock.  Had it towed to a deal and Chevy did a long block replacement with a remanufactured 6.2L.  It runs fine for now.  They had it for 3-4 weeks.  Dealership was great but this whole thing sucks as I have read that some folks have had it happen twice on the same vehicle.  Still under warranty and I didn't pay a dime.  Just not having a warm and fuzzy about driving it out of town anymore.  

[cdwolff420]

It is unfortunate to read all of these comments... My 2022 6.2L Chev Trail boss (64K miles) started making some odd noises on way back to the house the other day. Made an appt at local Chev dealership. On my way to drop off the truck, it stalled out and had to pull over and turned off the truck to restart it. Everything would turn on, but the engine would not start. Waited 4 hours for AAA to never show up... had to call a local guy. Anyway, dealer finally called to tell me that the engine has locked up (couldn't tell me how this happened) and that I needed a brand-new engine.... I am outside of warranty. $13,300 before taxes for this new engine. Couldnt tell me when this will get changed out as everything is on backorder without an ETA. I had no idea this issue has been happening to so many people. 

Edited May 6, 2024 by cdwolff420

[johnnyquick]

On 5/1/2024 at 8:06 AM, James Sommer said:

2020 GMC Sierra AT4 6.2, purchased end of 2020 new

 

2-5095 K miles no oil issues

 

5095-10804 miles needed to add 2 quarts before scheduled oil change to bring up to full (oil add indicator came up on the DIC)

 

10804-15652 miles no issue

 

15652-19194 miles needed to add 1 quart to bring up to full (oil add indicator came up on the DIC) oil life monitor still shows 48% which means that I would not be due for an oil change for another 2 months or so.

 

19194-20600 miles DIC indicates add oil, oil life indicator reads 25%.

 

32K lifer knock, replaced all on left side

 

34K random misfire left side, fouled plug

 

34.5K noise, loss of power, black smoke, misfile and all types of engine messages

 

New engine installed along with external oil cooler and all oil lines due to scores in the cylinder walls, scored bearings and cylinder #7 had all of the ring gaps within .25 of each other. Dealer had the vehicle almost 4 weeks and when I picked up it ran perfectly. Put on 4K miles and had the oil changed at the dealer to document that the service was performed and have my fingers crossed that this does not happen again. Within the first 1K miles I posted my best fuel economy if you are to believe the DIC numbers indicating that there were some issue with the original engine. GM would not extend the 5 year 60K drive line warranty as they replaced the entire engine. Although not as quite as my 2019 6.2 Yukon Denali the engine is very smooth and the idle is steady.

 

 

So, does your new engine have ANY warranty?

[dieselfan1]

I've often said you need to do 3000 mile oil changes. I do and never had an issue on any of my Chevy afm dfm trucks since 2007. I wonder how many of all these failures were doing oil changes according to the oil life monitor?

Oil is cheap, new engines not so much.

In fact I'm at around 1700 miles on my current oil. I'm heading out on a 1800 mile round trip tomorrow morning. I'm changing my oil today.

Oil is cheap. 

Comments?

Edited May 9, 2024 by dieselfan1

[mds47588]

My 2022 RST (purchased new on 17 Nov 21) had its first engine failure at 84,957 miles.  Over a month and a half later I got the truck back and it ran great until a week ago and the second engine also locked up 14,588 miles later at 99,845 miles.  Ironically both failures were 1.7 miles apart, which was a bridge on I-10 and a "shoulder" barely wide enough to pull out off traffic.  Both occurred while pulling a trailer.  1st was my RV, 2nd was with my 7x14 enclosed trailer.  First time I waited over 4 1/2 hrs for a tow truck, second time over 2hrs.

 

While I was out of warranty and just outside of the additional extended warranty, the dealership advised me to start a claim with their customer service advisors.  Unbelievably to me, the person that I dealt with was a fluent english speaking person residing in South Carolina vs someone on another continent that's never even seen an American pick-up.  GM initially "generously" offered for us to pay a mere $8,000 and they'd pick up the rest.  The dealership counter-offered at $1,500 and that's what I paid for a new engine, install, and everything else that accompanies it.  The final ticket price was over $14,400.  Additionally, ALL service has been at their business since new.

 

Both times, the dealership has been more than generous and put me in a loaner right away, with each of them being a new Silverado LT.  Nice rides, but I want MINE back.

 

This truck is the nicest vehicle I've owned and truly enjoy driving it...when its running.  After putting nearly 15k miles on engine number 2, I was feeling good about it as everything seemed to be normal until event #2.  I've lost all faith in being able to trust it again.  I travel a lot out of town and if either one of these would have happened away from the local area, it would have even been much worse.  Of course, as soon as the engine was ordered it is on backorder which is the world we now live in.

Edited May 10, 2024 by mds47588

[Bikerjon]

13 hours ago, dieselfan1 said:

I've often said you need to do 3000 mile oil changes. I do and never had an issue on any of my Chevy afm dfm trucks since 2007. I wonder how many of all these failures were doing oil changes according to the oil life monitor?

Oil is cheap, new engines not so much.

In fact I'm at around 1700 miles on my current oil. I'm heading out on a 1800 mile round trip tomorrow morning. I'm changing my oil today.

Oil is cheap. 

Comments?

Totally agree. Lifelong GM owner, ASE Master Technician and Fleet Manager for City of Minneapolis. Oil is cheap. I never go past 3000 miles on an oil change. Some will say I am wasting money changing oil too soon or whatever. I have not had collapsed lifters or a flat camshaft (not even in the 1980s when 10W40 oil did not contain enough E.P. lube). I will keep doing what I have been doing for over 40 years and just hope for the best. I am also going to price out an extended warranty if I decide to keep this T.B. past factory warranty.

I cannot believe GM will not stop producing DFM after all the problems, heart ache, costs, loss of trust, etc. They also better get their 10 speed transmission problems straightened out or they are going to lose a lot more customers.

[KARNUT]

6 hours ago, Bikerjon said:

Totally agree. Lifelong GM owner, ASE Master Technician and Fleet Manager for City of Minneapolis. Oil is cheap. I never go past 3000 miles on an oil change. Some will say I am wasting money changing oil too soon or whatever. I have not had collapsed lifters or a flat camshaft (not even in the 1980s when 10W40 oil did not contain enough E.P. lube). I will keep doing what I have been doing for over 40 years and just hope for the best. I am also going to price out an extended warranty if I decide to keep this T.B. past factory warranty.

I cannot believe GM will not stop producing DFM after all the problems, heart ache, costs, loss of trust, etc. They also better get their 10 speed transmission problems straightened out or they are going to lose a lot more customers.

I’m a little confused. You imply that 3K oil changes will solve the engine problems. Then you agree that GM has problems they need to solve by eliminating cylinder deactivation. I know for certain that changing the transmission fluid in my Odyssey will eliminate low speed shutter while changing gears. The shutter develops way before the recommended fluid change. Is gone once it’s changed. So if the engine failure is related to infrequent oil changes GM would probably send out a bulletin, wouldn’t you think? 

[Bikerjon]

On 5/10/2024 at 6:27 AM, KARNUT said:

I’m a little confused. You imply that 3K oil changes will solve the engine problems. Then you agree that GM has problems they need to solve by eliminating cylinder deactivation. I know for certain that changing the transmission fluid in my Odyssey will eliminate low speed shutter while changing gears. The shutter develops way before the recommended fluid change. Is gone once it’s changed. So if the engine failure is related to infrequent oil changes GM would probably send out a bulletin, wouldn’t you think? 

Don't be confused. Collapsed lifters, spun main bearings and lifter bores machined out of spec. are manufacturing defects and part defects. Frequent oil changes will not solve those problems but you probably know that. I only stated that oil is cheap and I personally always change my oil at or before 3000 miles.

 

Sorry for your confusion.

[KARNUT]

8 hours ago, Bikerjon said:

Don't be confused. Collapsed lifters, spun main bearings and lifter bores machined out of spec. are manufacturing defects and part defects. Frequent oil changes will not solve those problems but you probably know that. I only stated that oil is cheap and I personally always change my oil at or before 3000 miles.

 

Sorry for your confusion.

You’re right I’m not confused. I don’t believe blanket statements. This is not a slight. In my 50 years experience with all types of engines and oils one size doesn’t fit all. I’ve experienced engines live well with 25K oil changes. My driving style now I have a vehicle that has 4K oil changes, one with 5, two others once a year. Along with with my driving style engines have changed, DI and turbos now are in play. My later experience with Toyota and Honda with 2015-2017 models have 10K oil changes. The masses will go by the light. I didn’t, my kids do. They now have those vehicles. They will keep them until they die. It will be interesting to see what does them in. Cylinder deactivation and direct injection was a step back for engine reliability. I would give up what ever fuel mileage or power increase they may bring. A 10 speed transmission in a half ton? They lost me after 6. People love the gimmicks. I like to drive myself. You want to do 3K oil changes it’s your money. Most people agree 5K is the happy number. People who do oil changes for a living. That’s the sticker they put on your windshield. If they could talk you into more frequent they would. 

[64BAwagon]

Sounding like the 6.2L is going to go the way of the dinosaur. Not sure how GM is going to deal with all of the newly minted boat anchors they created with the 6.2L  

[mds47588]

Engine #2 has just been started the process at the dealer for removal and to make way for #3.  It was towed there on April 29th.  They had gave me a brand new GMC Elevation with the Turbomax to drive until mine gets replaced.  Nice ride...but it's not mine.  Also, General Motors "generously" offered me 4k on trade-in assistance to get out of mine if I decide to go that route.

[Freeze]

2022 (refresh) trailboss with the 6.2 had the bottom end bearings go a month ago at 55,000 km (33,000 miles).  The dealer tells me that the new engine is in but they are waiting on a seal kit and have no idea when that might arrive.  Putting miles on a rental truck but I miss the truck I paid for.

[gemarsh]

Well, thinking out of the box. What is the cause.of the mains going out? Trash, cheap bearings, machining, too light of oil?

 

If'n I had the 6 2 tick tick boom engine, I might entertain putting rods and mains in it right away. Be down a week or less and not stranded on the side of the road for a month or more.

 

Used to roll bearings in the frame on OTR trucks for a living just as a mileage precaution. Can't fathom bearing trouble before 50k.