Posted on 08/24/2026 2:29:21 PM PDT by DFG
The 6.2-liter V8 found in certain Chevrolet Tahoe, GMC Yukon, and Cadillac Escalade models has been recalled for more than a year now, but the remedy may not be to the government's satisfaction. The National Highway Traffic Safety Administration (NHTSA) announced it would investigate the recall after receiving complaints from owners who had experienced engine failures even after their trucks and SUVs had been repaired according to GM's standards.
Problematic Machining And Lubrication
The original recall of the 6.2-liter V8, codenamed L87 and also found under the hoods of some Silverado 1500 and Sierra 1500 pickups, pertained to machining flaws to the crankshaft and connecting rods, as well as foreign material that would clog oil passages and contaminate rod bearings. In extreme cases, affected vehicles would exhibit rod knock, losses of power, and complete engine failure.
GM traced the problem back to a supplier and worked out a solution to build the engine components to tighter standards, then issued NHTSA Safety Recall 25V-274 in 2025 for 597,000 examples of the company's full-size, body-on-frame SUVs and half-ton trucks. The recall inspection involved inspecting for excessive wear on the bearings and rods, with passing vehicles getting a higher-viscosity oil for better lubrication and failing units receiving entirely new engines.
Fixing A Fix Till It's Fixed
However, NHTSA's Office of Defects Investigation (ODI) has received nearly 500 complaints from 6.2-liter V8 owners who alleged their vehicles suffered from engine failure even after successfully carrying out the manufacturer recall. Furthermore, ODI says that GM itself has received 6,900 such reports, although consolidating duplicates brought the total number of claims down to 6,050. As a result, the office opened an engineering analysis and recall query into GM's supposed remedy.
Making matters worse for Chevrolet, Cadillac, and GMC, the complaints don't just apply to the 2021–2024 models that the companies initially recalled. Newer SUVs and trucks not subject to the initial 2025 campaign (and theoretically built with the new component design) have also reported engine failures, meaning the solution might be more complicated than GM and its suppliers initially thought. The total number of vehicles covered by ODI's investigation totals 997,743 trucks and SUVs from the 2021 to 2026 model years, 400,000 units more than the company recalled last year.
The engineering analysis is still under way, so it's possible that the post-recall engine failures are related to something else entirely, whether that's driver error or some other mechanical issue. We'll reserve final judgment for when we hear more from either ODI or GM.
CarBuzz Insight – Why This Matters:
Long known for its steadfast reliability and flexibility, GM's small-block V8 has suffered a bit of a black eye as a result of these pesky 6.2-liter engines. And it's all the worse that many of the six-two's current customers are driving around in some of GM's most expensive vehicles, like the Escalade and Yukon Denali. Although the automaker wouldn't admit to anything, we suspect that the new 5.7-liter L76 and 6.6-liter L78 engines found in the 2027 Silverado 1500 and Sierra 1500 are an attempt to distract customers from the unfortunate reputation of the current engine (while also boasting improved power and capability over their predecessor). Here's hoping for a speedy solution for all current 6.2-liter V8 owners.
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“I’m fed up with the feds...”
Your are correct. It isn’t the manufacturers’ fault. It’s the EPA. All manufactures had to reduce tolerances and adopt turbos to meet the mileage requirements. Anything with a recommended 0 weight oil is a problem.
Isn’t machining done by programmable robot machines? How do they get it wrong? Incorrect programming?
More crap to fail....and not if but when
I think that was the first year of the Vortec engine. I have one in my 96 suburban. It has had zero issues. I only had to change out the radiator And all the belts, hoses and gaskets. Just had the transmission rebuilt. I use the Suburban for a snow plow. Have done for 20 years.
Bring back the 250 cubic inch inline six!
They are all getting worse. It’s not just GM
The new toyota turbo V6 has the same early failures. And they have the same “machining debris” excuse as GM, hyundai etc
Like they somehow forgot how to clean machined parts
They all have the same problems, turbos, direct injection, 0 viscosity oils, tiny narrow bearings, reduced bearing clearances, razor thin piston rings and oil scrapers, cam phasers, ...
https://carbuzz.com/toyota-adds-v6-engine-recall/
Poor design. A V-8 engine is not designed to run on 4 cylinders.
Put BS EPA restrictions in place and this happens.
the original 4.8/5.3/6.0/6.2 LS engines are a fantastic replacement for the old 5.7 and other displatement block engine.
it wasn’t until they overloaded them with worthless tech like “active fuel management” that they started to go to hell. Couple that with an engine oil recomendation of thinner than water oil and less than perfect machining and you have...
The current problem.
there are 5.4s with over a million.. Take care of them they will take care of you.
The first gen LS put up with neglect much better than the Ford 5.4 did
There is a company that came out with the fix for the failing GM transmissions (I think they are 10 speeds) he is conviced the parts that are causing the failure were only put in to cause a failure. The only problem GM has is they are causing the failure while under warranty.
his product deletes those parts and claims the transmissions are bullet proof after his upgrade.
I remember that on ... from the 80s I think ...
Did you install a disabler? If so, and if it’s working well, which one did you buy? I’m faced with that issue in Oct., when I head back home to FL.
Yup, my advice: Never, ever, use an oil with a viscosity that begins with ZERO, as in 0w=30.
Ford made a V10? Chrysler did for the Viper.
the ford v10 is in many motorhomes ...
Probably just a typo but Chrysler never made a 363. Did you mean the ubiquitous 383 big block? Or the rare 361 big block or the somewhat more common small block 360?
As for the 318, it underperformed because it was a low compression base small block V8 with a 2bbl carb. Premium fuel would not help a 318 because it was never built with high enough compression that it would ping without premium fuel. Now it's bigger brother 340 four barrel or six pack on the other hand...
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