2023 Chevy Tahoe Highcountry 6.2L

[donahuec]

Catastrophic failure of engine at 14 MONTHS while traveling at 70Mph. BEWARE

 

[Blackcar]

Catastrophic failure of engine at 14 MONTHS while traveling at 70Mph. BEWARE

https://gmauthority.com/blog/2025/01/nhtsa-opens-investigation-regarding-gm-6-2l-v8-engine-failures/

 

[Antonm]

Care to share what oil weight, and oil change interval, you had been using?

Some anecdotal evidence suggests that perhaps the factory recommend 0W20 oil and relatively long oil change interval called for by the dash's oil life indicator might be a contributing factor to these early engine failures.

Curious to know what oil weight/ oil change interval you had been using.
...

 

[KMeloney]

So many of these joined-just-to-post-this posts lately.

 

[DontTaseMeBro]

So many of these joined-just-to-post-this posts lately.

Yup. Seems super sus. Hopefully OP comes back and posts more details other than my engine went kaboom.

 

[KMeloney]

Yup. Seems super sus. Hopefully OP comes back and posts more details other than my engine went kaboom.

Right? And down to the same "catastrophic engine failure" language...

We'll see if they return to post more info.

 

[WalleyeMikeIII]

Feels like the FAQ ought to have some sort of template for reporting an engine failure:
Which Engine:
What Oil are you using:
What Fuel are you using:
Oil Change Interval:
Driving Conditions:
etc...

(Can't actually believe I am typing this up...)

Should we start a "Failed Engine Forum?"

 

[donahuec]

I used recommended oil weight and interval. GM already checked as they were hoping i had ruined the engine. The 6.2L are probably going to be recalled by NHTSB because of safety issue.