Mary Barra should resign.

 

What it sounds like happened is the engines have a larger rod bearing clearance than the original spec. My understanding of the recall is they'll inspect the engine (probably look for metal in the oil, listen for abnormal sounds, etc) and if it passes then they're going to change the oil from 0-20w to 0-40w (0-40w is used in the LT1 and LT4 engines) and change the oil cap to say 0-40w. I have a 2023 Silverado on the recall list.

 

I'd be pushing for a new motor. If the engine is built wrong, well, that's their screw up.

Or, at least a high volume oil pump so you can continue using the correct oil.
I love the pump in my 5.3. Never seen it go under 60 PSI yet.

 

Wow, nice of em to give a free oil change and filler cap.

 

Full size trucks and SUV's. the 6.2 engine!!

 

LS engines?

 

The L87 that is being recalled is actually an LT engine.

 

Ya I don't know, a 6.2 with valve seats that fall out, crappy pistons, lousy lifters that fall apart. Who could complain about that? after all it's a good LS based engine that everyone loves
I'll keep running my crummy SB BBC engines.

 

Stock SBC and BBC engines never have engine failures....

I remember back in the day, you never bought a car that was close to 100,000 miles because the engine was close to rebuild time....

 

Here's what GM's research into the issue revealed

"The investigation uncovered two main culprits behind the failures – first, there was evidence of rod-bearing damage resulting from sediment contamination in the crankshaft oil galleries and connecting rods. Second, some crankshafts produced during this period exhibited out-of-spec dimensions and inadequate surface finishes. These combined flaws can lead to accelerated bearing wear, which in turn may cause severe engine damage or outright failure.

 

0-20 oil is great for a door hinge in your home, JMO

 

they should have just left the LS alone and not went to that crappy afm,dod or pos,whatever you want to call it.what did all that technology get??1 mpg

 

I can assure you they did not add that stuff because they were bored. They were essentially forced to by cafe standards.

 

they should have just left the LS alone and not went to that crappy afm,dod or pos,whatever you want to call it.what did all that technology get??1 mpg

I can assure you they did not add that stuff because they were bored. They were essentially forced to by cafe standards.

I recently bought my 2023 Silverado with close to 60K miles on it so more than likely I'll only get an oil change out of the recall. I'm retired and don't drive alot so in a couple of years I'll probably have average mileage for the year of truck it is.

With that said, on the few short trips I've taken with it, I'm seeing 21-22 mpg on the highway. I never saw that on '02 5.3. The 6.2L is sure nice when you're on a 2 lane and want to pass. Plus I'm getting a little spoiled by the android auto, cameras, sensors, lane assist, heads-up display, etc on it.

 

That increase in mileage over the '02 5.3 also came from higher compression, variable cam timing, and direct injection. Cylinder deactivation was not responsible for all of it.

 

I'm sure the 10 speed automatic vs the 4 speed automatic helps too.

 

Typical GM their 6.2 is oiling down roads for years before they admit there is a problem. Brings back memories: Corvair, Vega and exploding square body pickups.

As far as rebuilds at 60k that’s BS. With oil changes and maintenance 6cyl and small block Chevys 150k was not unusual plus these engines didn’t have the advantage of the turning 30% lower rpm’s due to overdrives and lock up converters

 

I have a 2019 Suburban at 107,000 miles, I bought it new, and I love it. I tow with it quite a bit. That said: I was on a road trip to South Florida with it about 6 weeks ago (from Atlanta) and without any warning whatsoever the torque converter failed catastrophically. Debris from the converter failure ruined the entire transmission by the time I limped to the nearest Chevy dealership. Being stranded on the side of the road 500 miles from home left no opportunity to shop for the best deal on transmission replacement. Five days and $7,500 later for a new transmission, I was on my way again.

Apparently the 6L80 transmissions are notorious for converter failure, and yes, GM should be ashamed and embarrassed.

 

Apparently the 6L80 transmissions are notorious for converter failure, and yes, GM should be ashamed and embarrassed.

Hopefully the technician working on your vehicle replaced the thermal bypass valve in the cooler lines with the updated one. Check your paperwork

Toyota also had to do a recall on vehicles for machining debris ruining engines. Suppliers can ruin a lot from poor QC

 

 

Thanks for the info. So since my truck is on the recall list, and it doesn't appear to have had the engine replaced, this sounds like they're going to replace the engine. Am I reading that right?

 

yeah..... I fall into this as well with my 2021 AT4. I will confess that for the size of this truck, and speed I was traveling in Florida with it, I was able to pull down 27.3MPG at 80mph.. I can't knock that. Mine has 53,000 miles on it now, and have stayed on top of all service and beyond with it..

 

Below is the base bulletin N252494000. Basically it just states who the crankshaft and rod manufacturers are. The cranshaft looks like it's made in Mexico and the Rod is a US manufacturer.

Below is the bulletin for the new trucks N252494001. It looks like they check for a P0016 code and if it comes up on the scan the vehicle gets a new engine and if not they get an oil change.

It looks like under N252494002 above is for vehicles already in service and it should just be a matter of looking at the date on the head. It makes me want to check mine before it goes to a dealer.

N2524940000

N2524940001

 

Similar recall on Acura MDX. Service order requires remove oil pan, visually inspect rod bearings.

 

I guess that's where the nickname "marble boxes" came from???

 

It's tough to defend them when you've only gotten 300K+ miles on one of those old "piston slapping, marble box" engines without even changing the plugs and that doesn't leak any oil .

Anyway, enough for me of the old school vs new school since this is really off topic for the original post.

 

This is why worrying about MPG for a truck is not worth it. Build me a reliable truck that is all I want.

 

Anybody seen this article?
GM De-Tools 7th Generation V-8 Plant, Pulls Unexpected 180 on ICE Engines | The Online Automotive Marketplace | Hemmings, The World's Largest Collector Car Marketplace

Seems technology has gotten in the way. Looks like GM may be going back to yesteryear. Holy Crap maybe a SB 350 based engine once again?????

 

Anybody seen this article?
GM De-Tools 7th Generation V-8 Plant, Pulls Unexpected 180 on ICE Engines | The Online Automotive Marketplace | Hemmings, The World's Largest Collector Car Marketplace

Seems technology has gotten in the way. Looks like GM may be going back to yesteryear. Holy Crap maybe a SB 350 based engine once again?????

It was a April fools joke.

 

If you take away the government subsidies and the "carbon credits" BS, EV's vanish from the planet like dinosaurs.

 

A very interesting video on the recall and oil viscosity...

https://youtu.be/pbEdr6Q6cKw?si=3dAqn4r2MkacsyaH

 

Nooo, I get it. No hard feelings. That's just me not READING the whole page.