Snakeboyaz
Member
I’m curious how they will perform the inspection and what all it entails. Even more curious to know what’s being done differently on the new engines to prevent these issues again. I
RECALL FINALLY ISSUED ON 2021-2024 6.2L V8 (L87)
- Thread starter jconner00
- Start date
FirstTimeTruckOwner
Active member
Supposedly they're scanning the truck to see if a certain error code is present. If the code is there, they'll recommend an engine replacement and if it's not, they'll change the oil to 0W-40; at least that's what I've read/watched online...
I have a call out to my dealer to get more info and will report back once I've spoken with them.
sanny651
Active member
When I had my engine replaced this February, I got the CarByte chip to turn off the DFM as well as the auto stop crap. Was told it didn't leave any trace on the system so GM can't use that to get out of covering a failure. I'm hoping it will not only help with that, but also prolong the transmission life. I heard that GM programmed the shift pattern to be softer when DFM is activated, and as such it's causing premature failures on those as well.
What I don't get is why GM doesn't simply add a DFM button like they do the auto stop, therefore putting them in a position to show the feds "Yep, see we are doing all we can to get the best MPG possible" yet also give the consumer the ability to bypass it.
What I don't get is why GM doesn't simply add a DFM button like they do the auto stop, therefore putting them in a position to show the feds "Yep, see we are doing all we can to get the best MPG possible" yet also give the consumer the ability to bypass it.
Sundevils
Member
I just got off the phone with my GMC service department (GMC of Madras) and learned two things: 1) The inspection is simply looking at the drained oil for contamination; 2) They are not doing any inspections yet because they have yet to receive the new oil caps and don’t know when they will come in.
FirstTimeTruckOwner
Active member
My dealership (Ferman GMC in Wesley Chapel) said the same thing. Essentially GM said they know they have a problem, but they're not releasing the solution to dealerships yet. I guess it's more of a "keep our eyes open for another notice" type of thing.
BigRed III
New member
I wonder if this is what they're talking about?
I just spoke with my SA in Phoenix and He said the same thing. It's just to soon so wait until you get a letter because they don't have any info from GM yet. BTY, He said the new oil is going to cost us more.
Leo581
Well-known member
I imagine the engine inspection will go something like this...
Tech: (opens hood to see there is actually an engine there) Yup, looks good! Add the new oil!
Tech: (opens hood to see there is actually an engine there) Yup, looks good! Add the new oil!
My guess, they'll first sample the oil and if good, change to a different/heavier oil. My hope will be that they extend the warranty to 8 years/100K miles. If they don't do something of value, resale values will be down.
This new oil type they’re going with is very expensive and cannot be bought locally in my area. I know because it’s the same oil brand and type my 2024 C8 Corvette with the 6.2 uses. I get it off Amazon for $65 a 6 qt case and my vette takes 8 QTs. It’s Mobil1 0w40 Supercar oil.
This whole ordeal on a $85k truck is pissing me off and the way GM is handling it makes it even worse. My truck only has 15k miles on it it’s a 2023 and I rarely drive it so my warranty will expire and I might have 30k miles on it. Then it blows up out of warranty and is basically still a low mileage truck. Ridiculous!
This whole ordeal on a $85k truck is pissing me off and the way GM is handling it makes it even worse. My truck only has 15k miles on it it’s a 2023 and I rarely drive it so my warranty will expire and I might have 30k miles on it. Then it blows up out of warranty and is basically still a low mileage truck. Ridiculous!
FirstTimeTruckOwner
Active member
My SA said the exact same thing about the oil costing more. I could get a 5 quart jug of Mobil 1 for $24 at my local Wal-Mart...but for 0W-40, I'm limited to essentially online purchases, or MAYBE get lucky and find some kind of deal at a local auto store. Since I do my own oil changes, I at least won't have to pay the ridiculous dealership cost...
Now the question becomes do you go with the Mobil 1 0W-40 that they'll use, or something like Royal Purple. 6 quarts of Mobil 1 is $72 on Amazon whereas the same 6 quarts of RP is only $62. Either way you still have to buy another 2 quarts separately...
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FirstTimeTruckOwner
Active member
Anyone think that 0W-40 isn't the right oil for these engines? Being in Florida...it never gets cold enough for 0W benefits...wondering if something like a 5W-40 would be better?
At the same time, these engines seem to have enough issues, so don't want to not use what GM recommends. Just curious why they felt 0W-20 was good to begin with. My wife's 6 cylinder Palisade calls for 5W-30.
At the same time, these engines seem to have enough issues, so don't want to not use what GM recommends. Just curious why they felt 0W-20 was good to begin with. My wife's 6 cylinder Palisade calls for 5W-30.
I may use the Mobil1 0w40 since my corvette uses that oil anyway. Either way this expense has been passed on to the customer by GM. I personally think it’s a bandaide to get these engines through the 5 year 60k mile mark then they’re not responsible if your engine blows then. Other words this is not a long term fix by changing oil viscosity.
I called my dealer they don’t have the oil yet or enough filters to even start the recall. I change my own oil not crazy about even letting them do the changes one time. I’ve had bad experiences in past with dealership oil changes on anything.
I think the 0w requirement on the oil is more for fuel economy than temperature. These engines already do not get great mileage so they’re trying to squeak better mileage out of them where ever they can.
SierraStorm
New member
From what I've read across the three forums I belong to, Roy is spot on on the 0w-20. It had to do with crossing the EPA MPG requirements line. Ironically I'd planned on putting this 0w-40 Supercar oil in my truck this next oil change anyway due the addition of the Supercharger. My ZL1 already uses it, so I guess it saves me from having two diff types to store, but as someone else mentioned, it's about 2.5x more expensive. I should probably send my oil off for an analysis to see if I have any potential issues given this recall since I doubt GM will touch my truck anyway.
Also FWIW, this was posted on another forum and was interesting as to why the 2025's weren't included. I surmise that the 2019-2020's weren't included because of a similar reasons. The quality of parts were better in those model years.
This was posted on that same forum and I thought was also interesting
"the real issue here is Metaldyne Performance Group who supplies most of the powdered metal forged and machined rods ASSEMBLED by Tonawanda. As recent as 2021, JD Norman Industries sued Metaldyne over connecting rods that did not meet the required specifications. JD Norman went chapter 7 in 2021 and lost GM, it's largest customer. However, Metaldyne is still supplying the rods to GM for small block chevy's.......... make your own conclusions here but having family at Delphi, GM doesn't make much but they assemble a lot of parts from Tier 1 and other suppliers... Harrison Radiator pre-dating Delphi and supplied to GM.... GM didn't "make air conditioning or radiators" the same way they don't cast or machine rods, but Tonawanda (Silao and Ontario->Oshawa) should have a QC process for rod bore diameters but they obviously do not, and rely on revolutions or torque, neither of which would identify small bore diameters, it'd just gut buried into the rod via revolutions or torqued until it hit the spec regardless of the diamater."
Also FWIW, this was posted on another forum and was interesting as to why the 2025's weren't included. I surmise that the 2019-2020's weren't included because of a similar reasons. The quality of parts were better in those model years.
This was posted on that same forum and I thought was also interesting
"the real issue here is Metaldyne Performance Group who supplies most of the powdered metal forged and machined rods ASSEMBLED by Tonawanda. As recent as 2021, JD Norman Industries sued Metaldyne over connecting rods that did not meet the required specifications. JD Norman went chapter 7 in 2021 and lost GM, it's largest customer. However, Metaldyne is still supplying the rods to GM for small block chevy's.......... make your own conclusions here but having family at Delphi, GM doesn't make much but they assemble a lot of parts from Tier 1 and other suppliers... Harrison Radiator pre-dating Delphi and supplied to GM.... GM didn't "make air conditioning or radiators" the same way they don't cast or machine rods, but Tonawanda (Silao and Ontario->Oshawa) should have a QC process for rod bore diameters but they obviously do not, and rely on revolutions or torque, neither of which would identify small bore diameters, it'd just gut buried into the rod via revolutions or torqued until it hit the spec regardless of the diamater."
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