08/27/2026
I will try to post more of these to keep all informed.
GM 6.2L V8 Owners What You Should Know
We want to share some factual information regarding an issue affecting GM's **6.2L L87 V8 engine** found in many Chevrolet, GMC and Cadillac trucks and SUVs.
This isn't a post intended to bash GM. It's information vehicle owners should be aware of, especially considering the cost of these vehicles and the potential severity of an engine failure.
In 2025, General Motors recalled approximately **600,000 vehicles** equipped with the 6.2L L87 engine. GM identified manufacturing defects involving certain **connecting rod and/or crankshaft components** that could result in engine damage, engine failure and loss of propulsion.
Affected vehicles included certain 2021–2024:
* Chevrolet Silverado 1500
* Chevrolet Tahoe
* Chevrolet Suburban
* GMC Sierra 1500
* GMC Yukon / Yukon XL
* Cadillac Escalade / Escalade ESV
GM's recall procedure included inspecting the engine. Engines that failed the inspection criteria were replaced. For certain engines that passed, GM's procedure called for changing the engine oil specification from **0W-20 to Dexos R 0W-40**, along with installation of a new oil-fill cap and updated owner information.
In August 2026, NHTSA escalated its investigation after receiving reports of additional L87 engine failures including failures occurring **after vehicles had already received the recall remedy** and reports involving engines outside the production range of the original recall.
The expanded investigation encompasses nearly **1 million GM vehicles from model years 2021–2026** while NHTSA evaluates the effectiveness and scope of the original recall.
To be clear: this does **not** mean every GM 6.2L engine will fail, nor does an investigation automatically mean another recall will be issued.
It does mean this is a legitimate, documented issue that owners of these vehicles should be aware of.
Owners experiencing **knocking, unusual engine noises, a check-engine light, hesitation, abnormal RPM or shifting behavior, reduced power, or a no-start condition** should have the vehicle evaluated rather than ignoring the symptoms.
And while the 6.2L engine situation is currently receiving significant attention,
GM has also dealt with documented concerns involving some of its transmissions over the years. That's another reason we believe proper maintenance, accurate diagnosis and staying informed about manufacturer bulletins and recalls are important parts of vehicle ownership.
Our purpose in sharing this isn't to tell anyone what brand to buy. It's to give our customers factual information so they can make informed decisions about the vehicles they already own or may be considering purchasing.
— Auto Repair by Mike
