NEW LZ0 Engine changes vs previous gen LM2 3.0 Duramax 

Just got my 1500 Sierra 3.0 Duramax and as an avid diesel user, it’s one of the best diesel engines I have ever had the pleasure of driving behind. Absolutely remarkable.

This new LZ0 is incredible, I routinely get 30+ mpg on trips around town. It was this channel that helped me realize that the 23 model year got the new engine. Thanks!!

I am sure the LZ0 is great. I am totally happy with my 2022 Sierra with the LM2 and hope to drive it many years.

I have a 23 GMC 3.0 with max tow. It has 3.73 gears, bigger radiator and alternator. With the 3.73 gears and A10 combo it’s a beast. The 15’ GMC 6.2 had to run the RPMs up and struggled a bit pulling my inclosed trailer up the hill by my house. The LZ0 with max tow does not struggle at all.

Thanks man for continuing to make videos on the new LZ0, as my first diesel, I have been learning alot.

Great info! The steel piston/longer rod combo is exactly what the 6.7 Powerstroke got in 2020.

Thank you for the videos you have been making about the LZ0! I’ll be purchasing one the first half of March, so I am definitely looking forward to this content.

Your piston drawings and overall information are great! I wish that I could draw like that!

Greg, Great Information as Always. Thanks -Doug

I wish I would have known this a few weeks ago. Just bought a 2021 AT4 used. Happy with it so far, hope there are no issues

Thank you for all this information you make me feel exuded I can’t wait to next month for my delivery zr2 Silverado 1500 bison with 3.0 lzo. I’m so glad I choice this engine

I looked at a newer Silverado with the 3.0 Duramax back in August as a replacement for my 2020 Silverado when its' original lease was up. But the only one our local dealer had on the lot was going for $80K which was way out of my budget. So we decided to just continue paying on my 2020 Silverado with the Turbo-4 in it. I like how it drives and it's done what we want without issues. When we have it loaded down with soggy decaying wood chips in the summer it doesn't even feel like there's anything in the bed. Since the 3.0 Duramax uses the same wimpy PF66 oil filter as my Turbo-4 I bought the upgraded PPE filter for it and some AMOSOIL Signature a few days ago to do an early oil change for the winter. I just need the time to get around to it before the weather gets too bad. :)

Thank you! It looks like I have to get one.

Awesome video thanks !!!

It would be nice to see a small diesel in the midsize trucks. Would like to see higher mpg in that segment

Thanks Great Video For Me Salute to You

I own one as well love it cant wait for a delete kit! Keep up the info love seeing it.

Sounds like the LM2 Timing Belt Service Interval should be good until 200k miles.

Most people with these engines say they use a lot of oil in between oil changes. I have a 2018 with the 5.3 gas and it uses 2 to 3 quarts between oil changes.

thank you

Great video, from my experience after being 1 week old buyer of the 2024 GMC SIERRA DURAMAX, I bought my BRAND NEW TRUCK to start new job & it failed 1 week later. No start, towed to dealership. 490 miles & left to be towed to shop. I'll see what happens.

On another video by another RU-vid author he highlighted that at or 100K mikes the transmission would have to be removed to check a belt that is on the back of the engine. He also denoted that the 3.0 had concerns with the rear main seal was reported to be a constant leaking problem. Also he said the engine was having reported long cranking times to start the engine. I value your topic in this video identifying the new pistons. BHH

Do you know which injection pump they are using on the LM2/LZ0? I know they are using Denso injectors, but I've not seen or heard any mention of the injection pump manufacturer or model. It looks like the Denso HP4, but would be interested to know for certain what they're using.

Now there is more info on LZO they should have put out more info on it way back.. maybe they were being conservative about it due to supply chain problems and they knew it would be in high demand and fulfilling orders would be a nightmare

I'm planning to order a 2024 Silverado RST double cab LZ0 with the max tow package, not because I tow a lot, but more because I want the heavy duty rear diff and springs, as I'll be hauling a slide-in camper. Can anyone give examples of their payload rating on this configuration? We all know by now how shady ALL the truck manufacturers are when it comes to payload, it's infuriating. It's impossible to find any real info without actually looking at door jam stickers. Unfortunately, there are no RST double cab LZ0 trucks in inventory near me that I can go look at.

I have put 94,000 miles on my LM2 3.0 Silverado. Engine is great but the emissions system has been very problematic. After 6 visits to the dealer and it going into limp mode many times they replaced the entire def tank. The ultrasonic sensor was failing that monitors the def fluid. They had it almost 8 weeks. Now they say the catalytic converter is bad in it. Unfortunately not covered under my extended warranty ($1,400 plus labor) Not sure why a Cat would fail???

Great video . . I'm glad all those changes took place. I have a question for you about the regeneration system on the 3.0 Duramax engines . . . I drove a new diesel school bus ( 17 years ago now ) which had obviously a different diesel engine, but the "regen" system would come on at least once a day, sometimes twice !!! When it was on, we were told NOT to turn the engine off - driving down the road was fine. Many times for me, it would be on when I got back to the lot and wanted to turn it off !!! Do these new diesel engines have a different way of doing the regen cycle ? MAINLY, not as often as back when I drove one ? I'm thinking about buying a new Yukon diesel, but I do mostly short trips around town - five miles or less - and I'm concerned about getting to the store or in the parking garage at the doctors office I go to monthly and having to wait until it stops "regenning". You said the Yukons don't have the LZ0 engines yet, but I might order a 2024, which could have it - either engine will still have to do the regeneration, anyway.

Looking at buying a new truck. I found your channel because I’m considering ordering an LZO. Also considering a 6.2 and a 3.5 Ecoboost. Currently I have a 2019 3.5 Ecoboost and it’s been a good truck. However all of the issues you hear about Fords warranty issues I’m exploring my options. I like what I hear about the new LZO except for one thing. Oil consumption. My question is are these really the oil burners I’ve read about? I also read under normal conditions GM considers 1 quart every 2k miles as normal. Tow with it and it’s consumption doubles. Have you seen this? Obviously your an LZO guy but I also read a lot of ugly things about 6.2 failures and AFM. Just looking for your input on the oil consumption. Other than this it looks like the 3.0 may be the best engine GM is offering in their 1500’s. Thanks for the videos. Look forward to your thoughts.

They need to offer this in the regular cab 1500.

I assume that this LZ0 still will not fit in the modified engine bay of the AT4 and Z71 SUVs.

I’m ordering a new 3.0 LZO suburban when they come out , dealer said prolly 24 , but nothing definite he could share yet

If you want to do this engine in a GMC Yukon?

Curious if GM is going to change to the LZ0 new 3.0 duramax in the Yukon, Tahoe and Escalade like they did in the Silverado and the sierra that’s now 305 hp and 495 ftlbs instead of this one with 277 hp and 460 ftlbs

My LZO '23 Silverado has been in the shop 3 weeks out of the 2 months I have owned it for an emissions code. They changed a Nox sensor and now are replacing the cat. Have you heard of these issues with the new engine?

GM raised the oil pump belt replacement interval because it doesn't matter if it's 150k or 200k it isn't under warranty so they just want you to not worry about it. Remember the Jedi mind trick? "These are not the droids you're looking for"

Just bought a 23 Denali loving the truck so far especially the 3.0. But I am wondering which motor is in the truck LM2 or LZ0. Production date is 12/22 but I don't know when they changed over to the new motor.

Do you recommend this engine as a daily driver and not towing? I’ve had two people tell me to stay away from diesel because of the emissions bs they have. Just want to know your opinion? Thank you.

I've watched other videos of the new LZ0 that say they're using oil, is yours using any oil? If not, why I'm I seeing that some of the LZO are using oil and some not?

only thing that sucks its 3800 bucks to change the timing belt they have to pull the trans n oil pan supposed to last 150,000 to 200,000 miles im sure once people hit a 100,000 miles theyll be trading them in to avoid the 4,000 dollar timing belt inspection n change

Can you give a little more info on the increased DEF usage on the LZ0? How much more are you consuming per X miles in comparison?

Can the 3 litre be deleted

Did u ever notice with ur lm2 the truck runs lazy alot, feels like the turbo doesn't spool and sometimes it does and when it does it runs amazin but when it doesn't more time than not it just doesn't move. Any suggestions?

Hp is a result of more torque at a higher rpm. If you have 1000lbft@1313rpm is 250hp 1000lbft@2626rpm is 500hp 1000lbft@3939rpm is 750hp 1000lbft@5252rpm is 1000hp. It's just an equation for the amount of work done in a given time. 1000lbft is a 1000lbft. Doing the same amount of work 4 times faster 1313rpm vs 5252rpm. Same could be said for a 250hp@5252rpm engine. It would do a 250lbft load at 4 times the speed as the 1000lbft motor at 1313rpm. In the end the same mount of work gets done in the same time frame. The 3.5EB with 375hp@5000rpm(393lbft) is the same strength as the GM 6.2 with 420hp@5600(393lbft). Torque is what does the work(force) hp is how fast that amount t of work gets done.

Can you actually feel a difference with the extra power? I've talked to a couple people that have bought them and they told me they don't really feel a difference from the lm2.

How is your oil level or still burning oil?

I just dropped my order yesterday for a MY24 Silverado ZR2 with the LZ0, to replace my MY23 1500 ZR2 6.2 which when I bought it, like you and many, was under the impression that the LZ0 either didn't fit and/or was a concerted GM marketing decision. I noticed that the MY24 Silverado Duramax diesel supplement was available online and I was looking through it. For whatever it may be worth, they noted again two different I6 Duramax engines available, the LM2 for the SUV and the LZ0 for the trucks. This can also be found in the VIN, with the SUV and LM2 getting a T in the VIN and the LZ0 pickup getting an 8. I was expecting LZ0 for MY24 SUV's as well but I suspect this is not a misprint by GM.

Hope they got it right this time.

So how do feel about the oil loss on this engine?

Why would they not change the oil pump drive belt lifespan on both engines if the P/N is the same especially since the oil pump output pressures are lower on the LM2?

Does the Lz0 consume oil like folks say?

How has the changes effected fuel efficiency?

Have you heard about the GM APPTOVED use of HIGH OIL CONSUMPTION in the LMO ? What's going on, GM? Can't you build an engine that doesn't use oil?

So odd that the part # for the belt is the same yet the interval was increased to 200k. I don’t understand how that’s possible

Might be gm’s only engine to reach 100k miles without a new motor

Lz0 escalade yukon all of them i want please more easy to afford in europe countrys

Honestly this GM Diesel has me contemplating switching from my Ford with the 2.7 ecoboost. I’ve always been a fan of diesels and this one knocks it out of the park..

They forgot to make the oil pump belt a chain instead of a belt 🧐. They say it should last till 200k miles, though when you have to service it the only way too is pull the transmission…. Good engine other than that issue that will be an issue when they get older.

There is no ee in LZ0. Yes, this engjne is basically a copy of the BMW B57

im about to buy the LM2, i shouldn't watch this!

3.0 Desasters and Germany BMW Audi Mercedes AMG Porsche 🤮🤮🤮🤮🤮