BREAKING: GM is officially recalling the L87

[blanchard7684]

So why not change the oil to that in 2025? Or diesels ? Or any other vehicle that uses 0w-20?

I'm not buying the oil fix. I think it could be a bandaid one vehicles with problems but the underlying problem will still remain.

It probably is a bandaid but a very potent one.

Either change a bunch of programming to unload the bearings at low engine speed , reduce fuel dilution somehow, or move to a higher viscosity oil.

 

[mummer43]

I spoke to the service manager at my dealer. He said that they will bring the vehicles in change the oil to a higher viscosity oil (0W400), put on a new oil cap, and then check the computer to see if it has a certain code. If it has that code then the vehicle is immediately “condemned” and it sits there until they get a new engine… probably months. He said it is going to be a disaster for GM.

 

[Sgt1411]

My 2025 Tahoe HC with 6.2L was built November 24 and the oil filler cap still says 0W20

 

[jfoj]

I think the P0016 may be a red herring. Maybe GM convinced the NHTSA that this is a forerunner for an engine failure and maybe they knew this would not show up often. Not saying it has not happened, but EVERY 6.2l failure I have read about never indicated any P0016 code. First occurrences of OBDII Trouble Codes are considered "Pending" and WILL NOT trigger the SES/CEL/MIL. 2nd instance of code triggers SES/CEL/MIL along with Freeze Frame Data. Pending codes will automatically clear after a specified number of ignition cycles if 2nd instance of the code does not occur.

I would think if the P0016 was a big problem, we would see a lot of chatter on forums about this code, I have not seen any instances, maybe I will search around just for fun.

Assume the P0016 code thought is oil starvation to the Variable Cam Phaser, the camshaft is hollow and maybe they felt this was something to look for.

 

[jfoj]

My 2025 Tahoe HC with 6.2L was built November 24 and the oil filler cap still says 0W20

I have neighbors who have newer builds, Feb I believe, they have 0W20 oil fill caps.

NOTHING changed for 2025. 2025 was never under "Investigation" because the investigation started either late 2024 or early 2025 and there were probably no complaints about 2025 engine failures at the time.

 

[viven44]

2025 was never under "Investigation" because the investigation started either late 2024 or early 2025 and there were probably no complaints about 2025 engine failures at the time.

Clearly the lax investigation standards, execution speed, transparency, and downright lack of commonsense is rampant in the automotive world. If there was no reason for the 2025 to be any different, it should be included, and the containment of issue (via the higher viscosity) be applied to production models in factory/dealers. If there isn't a scope increase to include the 2025s fairly soon, I'm hoping there has to be a 'software' fix at least for GM to continue to ship these ticking timebombs...

 

[DontTaseMeBro]

I spoke to the service manager at my dealer. He said that they will bring the vehicles in change the oil to a higher viscosity oil (0W400), put on a new oil cap, and then check the computer to see if it has a certain code. If it has that code then the vehicle is immediately “condemned” and it sits there until they get a new engine… probably months. He said it is going to be a disaster for GM.

I think they’re gonna get hit with a lot more class action lawsuits cause of this debacle.

 

[West 1]

I certainly would, the OEM's are pushing thinner and thinner oils because it helps them pass the Gas Mileage standards. They do not say it helps the life of your engine.

 

[PPV_2018]

Wonder why are they retcon’ing the oil spec to 0w40 and not 5w40

 

[LegalBrief]

Oh, my gosh! So much miss information and speculation so fast.

The problem: GM notes that the connecting rod and/or crankshaft engine components in affected vehicles may have unspecified manufacturing defects.

The hazards: affected engines with manufacturing defects in the connecting rods or the crankshaft can lose propulsion and ultimately lead to engine failure, increasing the risks of an accident.

The fix: Chevy Tahoe, Chevy Suburban, GMC Yukon/Yukon XL, and Cadillac Escalade/Escalade ESV units affected by the recall will be inspected for manufacturing defects. Vehicles that pass inspection will receive an engine oil and filter change, this time using high-viscosity 0W-40 Mobil 1 Supercar oil. The owner’s manual for L87-equipped models calls for 0W-20 oil. The oil fill cap will also be replaced. It’s unclear what happens if an affected SUV does not pass inspection, but it’s likely an engine replacement.

Owners should: GM will notify owners of affected SUVs. Additionally, General has placed a stop sale on affected SUVs currently in dealership inventory, meaning they cannot be sold, delivered, used in demonstrations, or traded to other dealerships until they’ve passed inspection and gotten the appropriate oil change. The SUVs that do not pass inspection cannot be sold or delivered to customers.

Only affects vehicles equipped with the 6.2L L87 V8 2012-2024

• GM recall number: N252494001
• Chevrolet Customer Service: 1-800-222-1020
• GMC Customer Service: 1-800-462-8782
• Cadillac Customer Service: 1-800-458-8006

I personally believe they changed parts design as part of 2025 reengineering. 0-40 Mobil 1 super car oil except in cold climates