BREAKING: GM is officially recalling the L87

[Vladimir2306]

While this may be really good advice for engine longevity; for anyone still in the recall and under GM powertrain warranty, this is probably poor advice. It will give GM an opportunity to deny a warranty claim as this wold be an unsanctioned modification.

Yes, of course, those who have a warranty can only rely on it. Doing nothing else but following GM's instructions

 

[mummer43]

More likely some late July vehicle build dates are safe and probably most of the Aug/Sept 2024 vehicle build dates are safe.

Again, my vehicle is a 8/2024 build, but I have verified the engine build date is July, 15, 2024 based on the build tag on the rear of the drivers side cylinder head. At least for now, I am safe by 2 weeks, but we will see if GM moves the goal posts again.

I believe GM knew there were problems as far back as 2022 and even in 2023 and were grasping at straws. There were 2 GM Customer Service Campaigns, one is 2022 for loose main bearing bolt torque in a specific VIN window and then another on in 2023 for oversize lifter bores in the engine. I think GM may have missed the bigger picture and focused on these events and thought they had found the problem. Then in 2023-2024 it seems the problems became worse, or at least this appears that the 2023-2024 models had earlier failures and even replacement engines were failing at low mileage.

So if I factory ordered my Yukon and it was delivered in January, 2024 then the engine should be outside of the affected range?

 

[vcode]

I advise everyone to open the engine pan, and see the condition of the connecting rod liners. If they are the same as in my photos, already worn out, then change them to red ones from the 6.2 4th generation. They fit more tightly, have less gap, and resist oil starvation more.
Playing with oil, DFM, and modes will most likely lead to nothing.

99.9% of owners won't do that to a new truck.....

 

[jfoj]

So if I factory ordered my Yukon and it was delivered in January, 2024 then the engine should be outside of the affected range?

No, only engines built on or after July 1, 2024 are supposed to be "good".

Look at the build date on door jam sticker and assume the engine was built 2-4 weeks before the vehicle was built

 

[Vladimir2306]

99.9% of owners won't do that to a new truck.....

Why?

 

[Scarey]

Why?

You have some very interesting reply’s. Because 99.9% of the population don’t have the desire or inclination to do so.

 

[Vladimir2306]

You have some very interesting reply’s. Because 99.9% of the population don’t have the desire or inclination to do so.

Then they need to put up with it and install 2-3-4 engines during the warranty, or change the engine themselves after the end of the warranty