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New bulletin/Campaign 6.2 L87

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bruincounselor Enthusiast

bruincounselor

Posted
Posted
On 10/8/2025 at 7:45 PM, MrLeadFoot said:

What do they give you for a warranty? 

GM says 150,000 miles or 10 years from initial service date; whichever comes first. This means I have until 2/2032 - This would be on the bottom end of the new engine. Otherwise I just get the remainder of the regular factory drivetrain warranty (I have under 2 years left).

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Snow White
Snow White

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

newdude
newdude

Update(s)   GM sent dealers a new special tool to use with an existing tool, the Picoscope (fancy high end oscilloscope plus a whole bunch of other fun stuff it can do).  Its a knock sensor

newdude
newdude

EDIT:  Linking an earlier version of the recall here that's from this very thread:   https://www.gm-trucks.com/forums/applications/core/interface/file/attachment.php?id=182274&key=25bd8ff5fd2a227a

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MrLeadFoot Enthusiast

MrLeadFoot

Posted
Posted
20 hours ago, bruincounselor said:

GM says 150,000 miles or 10 years from initial service date; whichever comes first. This means I have until 2/2032 - This would be on the bottom end of the new engine. Otherwise I just get the remainder of the regular factory drivetrain warranty (I have under 2 years left).

OK, so not different than people like me who didn't get a new motor.

 

Just curious, how is everything else now that the new motor is i? Anything related get upended? Like, do you have rattles or creaking or anything like that since the repair? Hood, doors and bumper all lining up, and front bumper sensors and all working like they were before the engine swap?

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bruincounselor Enthusiast

bruincounselor

Posted
Posted
1 hour ago, MrLeadFoot said:

OK, so not different than people like me who didn't get a new motor.

 

Just curious, how is everything else now that the new motor is i? Anything related get upended? Like, do you have rattles or creaking or anything like that since the repair? Hood, doors and bumper all lining up, and front bumper sensors and all working like they were before the engine swap?

Everything is exactly as it should be. Any less and it would need to be addressed. 

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MrLeadFoot Enthusiast

MrLeadFoot

Posted
Posted
3 hours ago, bruincounselor said:

Everything is exactly as it should be. Any less and it would need to be addressed. 

That's great news. I am happy for you. One thing I would be afraid of is all the incidental issues that might go along with an engine swap, given all that they have to dismantle to swap motors in these trucks. I know with the Fords the cab is lifted off the chassis, but I think on GMs the front has to come off. So, congratulations!

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JP642 Enthusiast

JP642

Posted
Posted

A few more data points

  • Took my 22 in for the L87 recall to one of the larger GMC groups here in Atlanta - Service advisor said they had several come in broken but they did not have any fail the Pico test
  • He also said that they are going to maintain oil change pricing (@$89 for 6 qts / @$129 for 8 qts) even though the switch to the new super car oil - not sure if same across GM or just this auto group 
  • 2 weeks later...
jordanmf09 Enthusiast

jordanmf09

Posted
Posted

I have a '22 6.2 ZR2 and I have had a handful of issues with this truck.  I had loss of propulsion issues about a year ago while I was on the highway and ended up thankfully coasting to the side of the road. Took about ten minutes to finally get the engine restarted. Happened one other time after getting it serviced at the dealership and they made some sort of fix and I haven't had that issue since.

 

My vehicle was part of this recall and I took it to the dealer a little over a week ago and I got the call last week that my truck needed the engine replacement. 

 

The service representative said that they had an engine in stock that they'd be replacing it with so I should get it back sometime next week. 

 

Has about 21k miles.  

 

 

mjm-1957 Enthusiast

mjm-1957

Posted
Posted

We have changed 4 engines that failed the recall so far. Another one is waiting to come in and countless other failures before this recall came out. It is tying up 3/4 of the shop with all this engine work. The other guys are busy doing valve bodies or pulling transmissions out to be overhauled. A Terrain engine that locked up is in the works and timing chains on an Acadia are being finished up now. General Motors will have no more customers to screw if they don't start building a better product and start taking care of the customers  that  are suffering threw another failure that GM passes off as Professional Grade. What a joke. The 3.0 liter diesels are also coming in alot with coolant usage with no external loss. We have changed two engines already and both had porous cylinder heads allowing coolant into the cylinders. That is a disaster to work on. Good job GM.

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NavyVette Enthusiast

NavyVette

Posted
Posted

I love how they put it "For vehicles not yet displaying failure symptoms, the fix includes changing to a higher-viscosity oil, installing a new oil filter, and adding an updated oil cap to reflect the newly recommended viscosity."

 

"Not YET"

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MrLeadFoot Enthusiast

MrLeadFoot

Posted
Posted (edited)
3 hours ago, PunchT37 said:

For your viewing pleasure?

 

 

Not sure if I should thank you or not because, based on what they found in this video on both engines, this has me thinking ALL these engines are going to blow at some point, some just sooner than others. In other words, it looks like the journals and bearings are going to wear at an accelerated rate, and we will all experience the issue at some point, and GM is hoping that MOST of them will die AFTER the 150k mile obligation they settled on with the NHTSA. Your thoughts?

Edited by MrLeadFoot
PunchT37 Enthusiast

PunchT37

Posted
Posted
11 hours ago, MrLeadFoot said:

Not sure if I should thank you or not because, based on what they found in this video on both engines, this has me thinking ALL these engines are going to blow at some point, some just sooner than others. In other words, it looks like the journals and bearings are going to wear at an accelerated rate, and we will all experience the issue at some point, and GM is hoping that MOST of them will die AFTER the 150k mile obligation they settled on with the NHTSA. Your thoughts?

I believe you are correct. Those cranks suck. The chamfers are way too big. Roughness is bad but, how many cranks are worse than that on the many rebuilds that many bring to everyday machine shops? Stock rebuilds, hot rods, etc. Most to all seem to last anyway.

 

Add 0w20 oil, heat, oil breakdown, general truck duty, etc., and most will have a shorter than normal life.

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