6.2 Engine Replacement

[Vladimir2306]

Anyone have any pics of any engine swap? Sorry for bumping this I’ve been poking around and can’t find pics that I thought existed.

I’m curious how invasive the replacement is - does the interior need to be gutted or can it all be done in the engine bay?

I may move from my ‘24 Yukon XL SLT diesel into an Escalade ESV - and debating on getting a ‘24 with a 6.2 or 3.0.

I prefer the 3.0 but there are very few out there.
Pretty ridiculous to ask this before dropping $100k on a vehicle but I know the 6.2 I’m looking at has extended warranty out to 2034 for the power train so I’m assuming this means it passed the pico. Awaiting confirmation from dealer. The recall shows as open Feb 2025. Not sure if that was the case for all vehicles or not.

The interior does not need to be disassembled. Only the front end, bumper, headlights, radiator grille, radiator are removed

 

[JayceeP]

The interior does not need to be disassembled. Only the front end, bumper, headlights, radiator grille, radiator are removed

Wild! How’s it working now?

 

[Vladimir2306]

Wild! How’s it working now?

It works fine, but my new engine was torn apart, inspected and reassembled. Now the mileage is about 30 thousand miles, and no problems.

 

[JayceeP]

It works fine, but my new engine was torn apart, inspected and reassembled. Now the mileage is about 30 thousand miles, and no problems.

Wow! Lots of driving lol

 

[Vladimir2306]

Wow! Lots of driving lol

I drive a lot, now the mileage is a little more than 100 thousand miles

 

[WalleyeMikeIII]

Would any of you guys shy away from a 2024 impacted by the 6.2 recall regardless of pico test pass, engine already repaired etc. Hard pass or take the 10 year warranty and live life?

I would. My 2022 passed the Pico test in June at 38,500 miles. Rod bearings failed at 44,750. At dealer now for engine replacement. It is done, I pick it up Monday.

 

[Marky Dissod]

The 'PICO' test can detect early signs of failure that are not yet detectable to the driver, but it can't actually tell how well or badly the bearings were machined.
It is entirely possible to get an L87 that can pass the PICO test - possibly because the owner already switched to a thicker motor oil? -
that was still assembled to 'substandard spec', and yet may not fail til 'just barely' after 150,000 miles.

Also note that some (not many but some) L87s have been replaced TWICE.

 

[mikeyss]

Would any of you guys shy away from a 2024 impacted by the 6.2 recall regardless of pico test pass, engine already repaired etc. Hard pass or take the 10 year warranty and live life?

I would run away screaming from any L87 6.2! Part of the reason is because these 6.2 failures just happen with no warning, and I would never trust taking it on any trips. In my opinion, there isn't a price low enough that would attract me to buy one, because it seems that the L87 issue isn't fixed, so even a replacement engine isn't safe.

 

[Stbentoak]

I would run away screaming from any L87 6.2! Part of the reason is because these 6.2 failures just happen with no warning, and I would never trust taking it on any trips. In my opinion, there isn't a price low enough that would attract me to buy one, because it seems that the L87 issue isn't fixed, so even a replacement engine isn't safe.

That is the real crux. Passed test or new engine.. would you load it up and take your family on a multi week cross-country trip knowing in the back of your mind what the possibilities and potential outcomes were?

 

[JayceeP]

That is the real crux. Passed test or new engine.. would you load it up and take your family on a multi week cross-country trip knowing in the back of your mind what the possibilities and potential outcomes were?

Yeah I agree. I currently have a ‘24 3.0 diesel LM2 in our Yukon XL…. but even with that, I know the coolant control valve has left people stranded. No recall but seems like it was fairly widespread. I’d be lying if I said that wasn’t in the back of my head when doing road trips and part of the reason I took my F150 3.5 eco boost on our 2,000km+ road trip this summer.

I also hear there are thrust bearing issues in the LZ0.

So really, seems like a crap shoot either way. Not sure one is really holier than the other. Perhaps our biases are :|

 

[mikeyss]

That is the real crux. Passed test or new engine.. would you load it up and take your family on a multi week cross-country trip knowing in the back of your mind what the possibilities and potential outcomes were?

I would be a nervous wreck driving across Kansas, or some of the very off road camping trips I take here in Colorado. If an engine blew in some of the spots I go, I think the vehicle would be stuck there for life, lol.

 

[shekmark]

These thoughts circle me back to the resale value ( depreciation) making it very costly to sell or trade and move on. I’m close to retiring and don’t want to take on a new 30-40K cost ( 40K trade in value on a new(er) 70-80K SUV. Would not be another GM product.

 

[Fless]

I would be a nervous wreck driving across Kansas, or some of the very off road camping trips I take here in Colorado. If an engine blew in some of the spots I go, I think the vehicle would be stuck there for life, lol.

In Colorado keep the number for Colorado 4x4 Rescue and Recovery handy. Free service. 24/7 HOTLINE: 720-722-1204

Consider donating to the 501(c)(3) -- I'm not affiliated but to me it's a worthwhile cause.

Colorado 4×4 Rescue & Recovery – We Recover the Rockies

www.co4x4rnr.org

 

[Stbentoak]

Yeah I agree. I currently have a ‘24 3.0 diesel LM2 in our Yukon XL…. but even with that, I know the coolant control valve has left people stranded. No recall but seems like it was fairly widespread. I’d be lying if I said that wasn’t in the back of my head when doing road trips and part of the reason I took my F150 3.5 eco boost on our 2,000km+ road trip this summer.

I also hear there are thrust bearing issues in the LZ0.

So really, seems like a crap shoot either way. Not sure one is really holier than the other. Perhaps our biases are :|

Well, the 3.0 has certainly reported a few problems for sure. But that seems to be dying out on the forums now. You don't hear of people reporting daily or even weekly of any more of these thrust bearing failures. To be sure, there are some out there, maybe even quite a few. But I think proportionally it's way less and maybe way way less than this 6.2 debacle. The very vast majority of the failures are within 5000 miles. So, the engine never really was good right out of the gate. So, if you're past that point it's a pretty known fact that you are in pretty good shape. Our LZ0 has ran like a top. Doesn't exhibit any of the symptoms of the failure. And I wouldn't have any qualms of driving it 2000 miles tomorrow.

 

[Marky Dissod]

currently have a ‘24 3.0 diesel LM2 in our Yukon XL ... but even with that, I know the coolant control valve has left people stranded.

On one hand, 'stranded' is, well, stranded.
On the other hand, aren't you quite a bit more stranded by an entire engine failure, vs a coolant control valve?
Isn't the latter far easier quicker and cheaper to remove and replace vs an entire engine that may fail AGAIN?

 

[JayceeP]

On one hand, 'stranded' is, well, stranded.
On the other hand, aren't you quite a bit more stranded by an entire engine failure, vs a coolant control valve?
Isn't the latter far easier quicker and cheaper to remove and replace vs an entire engine that may fail AGAIN?

Sure but if you’re in the middle of nowhere or on the side of the highway, stranded is stranded. Also, some people waited weeks/months for their new valves to come in. Sounds pretty stranded to me!

 

[Marky Dissod]

Sure but if you’re in the middle of nowhere or on the side of the highway, stranded is stranded.
Also, not sure if you’re aware but some people waited weeks/months for their new valves to come in. Sounds pretty stranded to me!

Please make me more aware, I'm here to read and learn too - I may have to buy one of these someday ...

All other things being equal, though, it SEEMS like I could carry a spare coolant control valve in the truck, just in case?

 

[JayceeP]

Please make me more aware, I'm here to read and learn too - I may have to buy one of these someday ...

All other things being equal, though, it SEEMS like I could carry a spare coolant control valve in the truck, just in case?

Oh for sure - I agree with you overall. Engine replacement sounds like it would suck way more lol.

But if you are new to the forum just do a bit of googling on 3.0 LM2 coolant control valve. Not trying to scare you or cause misinformation but it definitely is a bit of a “common” issue.

Also apparently Thrust Bearing issues on the LZ0 diesel causing engine blows. No recalls that I know of though.

 

[Stbentoak]

Oh for sure - I agree with you overall. Engine replacement sounds like it would suck way more lol.

But if you are new to the forum just do a bit of googling on 3.0 LM2 coolant control valve. Not trying to scare you or cause misinformation but it definitely is a bit of a “common” issue.

Also apparently Thrust Bearing issues on the LZ0 diesel causing engine blows. No recalls that I know of though.

Coolant control valves were prevalent on early LM2. Later ones with the newer valve versions seem to hold up. LZ0 Thrust bearings are definitely out there, but I don't think there nearly as prevalent as 6.2 issues..

 

[JayceeP]

Coolant control valves were prevalent on early LM2. Later ones with the newer valve versions seem to hold up. LZ0 Thrust bearings are definitely out there, but I don't think there nearly as prevalent as 6.2 issues..

Yeah for sure. I’m thankful my LM2 is late build. Got a 2024 (Yukon XL) so so far so good . Very happy with it overall.