6.2 gas vs. 3.0 Duramax, which one to buy?

[91RS]

What’s your angle here? Deny everything every time someone brings up the massive amount of problems these trucks have so you can feel better about the money you spent? Denying the problems doesn’t make them disappear. There are threads and posts about all the problems with these trucks all over the internet. All you have to do is open your eyes, you don’t even have to look that hard. There are tons of posts here about the 6.2’s locking up with no warning, you don’t even have to get on other forums or FB. I don’t even see how you could possibly deny it. Here’s the first thing I saw opening FB, but yeah, there’s definitely nothing going wrong with them.

 

[DuraYuk]

What’s your angle here? Deny everything every time someone brings up the massive amount of problems these trucks have so you can feel better about the money you spent? Denying the problems doesn’t make them disappear. There are threads and posts about all the problems with these trucks all over the internet. All you have to do is open your eyes, you don’t even have to look that hard. There are tons of posts here about the 6.2’s locking up with no warning, you don’t even have to get on other forums or FB. I don’t even see how you could possibly deny it. Here’s the first thing I saw opening FB, but yeah, there’s definitely nothing going wrong with them.

My angle is your making things up and have no experience regarding the new platform. Your posts make no sense. The lm2 is extremely reliable. The 21+ interiors do not creak at all.

It amuses me the people here who clutch the old stuff like it's gold when most of it actually was junk. Guess it's a coping mechanism.

 

[91RS]

No, I’m not. I have much more experience with them than you. I’ve touched more of them than you. I’ve driven more of them than you. There are tons of posts on here, other forums, Facebook groups, etc. from other people saying their trucks have experienced exactly the problems I’m saying the trucks have, yet you still deny it and claim I’m wrong.

I’d give up some creature comforts any day to have a vehicle I can rely on to make it through a vacation without the engine locking up. And many other people agree. The snazzy infotainment in these new trucks will be as useless as the old ones in a few short years. These new trucks are not built for long term ownership like the old ones were. I never said the old ones were perfect, I said GM is not known for quality, but to claim these new trucks don’t suffer from, at best, the same quality issues GM has always had, is laughable. They have some more competitive features, sure, but there is literally no competition except the Expedition and Navigator. There’s nothing for them to be competitive against. If you need/want a big body-on-frame SUV, your choice is GM or Ford.

 

[DuraYuk]

No, I’m not. I have much more experience with them than you. I’ve touched more of them than you. I’ve driven more of them than you. There are tons of posts on here, other forums, Facebook groups, etc. from other people saying their trucks have experienced exactly the problems I’m saying the trucks have, yet you still deny it and claim I’m wrong.

I’d give up some creature comforts any day to have a vehicle I can rely on to make it through a vacation without the engine locking up. And many other people agree. The snazzy infotainment in these new trucks will be as useless as the old ones in a few short years. These new trucks are not built for long term ownership like the old ones were. I never said the old ones were perfect, I said GM is not known for quality, but to claim these new trucks don’t suffer from, at best, the same quality issues GM has always had, is laughable. They have some more competitive features, sure, but there is literally no competition except the Expedition and Navigator. There’s nothing for them to be competitive against. If you need/want a big body-on-frame SUV, your choice is GM or Ford.

Based on your responses you do not have experience with the platform.

Squeaky Interior panels? Nope
Lm2 being unreliable ? Nope
Suspension being bouncy? Nope
Def system being picky? Nope

You really think the old stuff was built to last ? The 4l60e was built to last? The plastic interior? The gauge clusters ? The emissions systems? Which generation are you so fond of? Because 2020 and older all had issues and the old 4 speed auto vehicles had the most.

People post about issues. Not everyone posts about positive experiences. Forums see more issues posted since people want resolution. Every brand including Toyota has this issue prevalent.

What astounds me are the guys here with 30 year old trucks talking about the issues on vehicles they know nothing about while ignoring that their own forum is Riddled with problems.

You a 91 camaro fan? Rs? Tell me how the worst camaro ever made is good? How's the interior on that thing lol.

 

[91RS]

You are something else. Clearly you can’t handle someone not agreeing with you and can’t read. I never said any of those things.

The interior panels are creaky when you push on them. All the plastics around the radio and console creak when you push on them. This is the case with every GM product, new and old.

I never said the diesel was unreliable, I said it has oil leaks and higher maintenance cost. I said the 6.2L is unreliable.

I never said the DEF system was picky, I said if the DEF doesn’t meet the quality requirement it puts the truck in limp mode (as will any emission system failure on a newer diesel) no matter how far away you are from home and draining it out isn’t covered by warranty. It happens.

I never said the suspension was bouncy. I was it was crashy on rough roads. I’ll say it isn’t as crashy as the old body styles (the K2 is the worst) but an $80k+ vehicle shouldn’t feel like that. The Germans can manage it.

I never said the old ones were better quality. I said GM has never been known for quality (how many times do I have to say that before it gets through?). I said they were more reliable. The 4L60 has been discontinued since 2008 and overall wasn’t that bad considering how long they sold it. The 6L80 was a great transmission until the K2 when they cheaped out on the torque converter but at least they still gave warning before blowing up unlike the new 6.2s. The 8L90 is crap but doesn’t generally blow up. The 10’s are pretty good.

I’ll go ahead and say this again and maybe it’ll get through to you. GM has never been known for quality. Read that again. I never said the older body styles were better quality.

I didn’t mention this before since I was trying to keep it to a minimum since it’s off topic but my comparisons to the older body styles are a “for the money” thing. I’d rather buy a 14 Escalade for $25k than a $125k 23 Escalade that has all of the same quality issues but an engine that locks up with no notice. I don’t see the value in these trucks for the quality you get.

Just to appease you, if was forced to buy a 21+, I’d buy the diesel.

 

[91RS]

Engine Failure on New 2021 Yukon AT4

My new 2021 Yukon with 3,000 miles on it already has had an engine failure. The dealer says a lifter failed which in turn damaged a pushrod. The worst part is that the replacement parts are on backorder with zero estimates on the delivery timing. Super disappointing on a brand new car and my...

www.tahoeyukonforum.com

URGENT: New 2022 Yukon XL Denali Engine Failure

I took delivery of a brand new 2022 Yukon XL Denali on 8/11/22. Exactly two weeks later the dealer had to pick it up with a flat bed due to multiple system warnings including check engine light and running rough with engine noises. I still have not received any news whatsoever from the...

www.tahoeyukonforum.com

2021 Z71 Tahoe Engine Failure Tear Down 4k Miles

www.tahoeyukonforum.com

2nd time Lifter Failure... 2021 Yukon AT4

I'm now convinced it was not a bad batch but just a design flaw. My Yukon was built in May; lifter failure at 5000 miles. Dealer replaced both banks, all 16 lifters. 500 miles later, lifter failure AGAIN. The 75k pile of sh*t is being towed to dealer again tomorrow. If you are on the fence about...

www.tahoeyukonforum.com

2022 Cadillac Escalade blown engine!

My brother-in-laws 2022 Escalade's engine just blow the other night. Has anyone heard about this in other Escalades or is this one just a fluke?

www.tahoeyukonforum.com

2022 6.2L Yukon Spun Crankshaft Bearing

Hi all, About 3 weeks ago I had my Yukon with the 6.2L engine in cruise at 115km/hr (~70mph) when all of a sudden I realized I was dropping speed and noticed the vehicle was in neutral and the engine was off. No unusual engine noise occurred or check engine lights came on. I coasted to the...

www.tahoeyukonforum.com

Lemon '22 Tahoe

Currently going through a lemon law situation with my '22 Chevy Tahoe. I wanted a place to vent and also connect with anyone who may be having similar issues. I purchased my vehicle May 2022, as of this posting it has been in the shop for one thing or another for 119 days (it is currently June...

www.tahoeyukonforum.com

I’m definitely a liar though.

 

[DuraYuk]

Engine Failure on New 2021 Yukon AT4

My new 2021 Yukon with 3,000 miles on it already has had an engine failure. The dealer says a lifter failed which in turn damaged a pushrod. The worst part is that the replacement parts are on backorder with zero estimates on the delivery timing. Super disappointing on a brand new car and my...

www.tahoeyukonforum.com

URGENT: New 2022 Yukon XL Denali Engine Failure

I took delivery of a brand new 2022 Yukon XL Denali on 8/11/22. Exactly two weeks later the dealer had to pick it up with a flat bed due to multiple system warnings including check engine light and running rough with engine noises. I still have not received any news whatsoever from the...

www.tahoeyukonforum.com

2021 Z71 Tahoe Engine Failure Tear Down 4k Miles

www.tahoeyukonforum.com

2nd time Lifter Failure... 2021 Yukon AT4

I'm now convinced it was not a bad batch but just a design flaw. My Yukon was built in May; lifter failure at 5000 miles. Dealer replaced both banks, all 16 lifters. 500 miles later, lifter failure AGAIN. The 75k pile of sh*t is being towed to dealer again tomorrow. If you are on the fence about...

www.tahoeyukonforum.com

2022 Cadillac Escalade blown engine!

My brother-in-laws 2022 Escalade's engine just blow the other night. Has anyone heard about this in other Escalades or is this one just a fluke?

www.tahoeyukonforum.com

2022 6.2L Yukon Spun Crankshaft Bearing

Hi all, About 3 weeks ago I had my Yukon with the 6.2L engine in cruise at 115km/hr (~70mph) when all of a sudden I realized I was dropping speed and noticed the vehicle was in neutral and the engine was off. No unusual engine noise occurred or check engine lights came on. I coasted to the...

www.tahoeyukonforum.com

Lemon '22 Tahoe

Currently going through a lemon law situation with my '22 Chevy Tahoe. I wanted a place to vent and also connect with anyone who may be having similar issues. I purchased my vehicle May 2022, as of this posting it has been in the shop for one thing or another for 119 days (it is currently June...

www.tahoeyukonforum.com

I’m definitely a liar though.

OMG a forum with problems listed. Now do the other generations!

It's cool dude I made my point. If you put piss water in the DEF tank it will give you a quality error. But the cheapest DEF with a compliant sticker on the box won't unless the quality sensor is bad.

The 4l60 and its derivatives is literal shit when you understand how long its been made for and how simple it is.

Even toyota forums have people posting problems. It's what most forums are all about. People post for help.

the Germans do it better? What German car is the size of a yukon? What's it cost?

You really think the 21+ ride terrible ? Lol

So what is your perfect vehicle today ? What are you fond of?

not everyone wants an old vehicle to drive everyday. We want safety and features. We want space. We want efficiency.

 

[91RS]

And yet you’re still saying I said things I didn’t. Absolutely hilarious. Try taking off your bias and read all my posts again. Maybe the you’ll actually understand the things I’ve said because everything you say I said is so far off base it isn’t even funny. I never said the Germans do it better, I said their suspensions aren’t crashy. My gosh you cannot read.

Sure, the older ones have problems. I’ve yet to see where I said they didn’t. But a 5 minute search doesn’t pull up a sea of threads on low mileage trucks all needing new engines. Not even in the K2 trucks!

It is totally fine that you don’t want an older vehicle, but just say that. Someone has to waste their money buying it new so I can buy used (not that I will ever be buying of these used, just to be clear). If you want a new vehicle and don’t GAF about how much it costs or anything else, go for it. It’s your money. That being said, that doesn’t make anything I’ve said not the truth because you don’t want to hear it and no matter how much you twist it to say something I never said. I’m not the only person in the world who thinks these newer trucks are insanely overpriced for the quality you get.

 

[tooleyondeck]

OP: I can only speak from my own experience, I own a Gen V LT1 (6.2L) Camaro and I previously owned a Gen V L83 (5.3L) Silverado, both of which share the LT platform of the L86 (6.2L) that you would be considering. I will say that the Gev V engines are a night and day difference compared to the Gen IV LS (that your Tahoe has). They are stronger and more efficient, albeit more complicated to work on. AFM/DOD continues to be a problem on the automatics, a delete after warranty is something to consider if you intended to keep it long-term.

My personal recommendation would be to let the 3.0L Duramax mature a bit before committing $80K+ to one, as the LM2 has already been replaced by the LZ0 after only 2 production years. I think we, as GM guys, hear the name Duramax and we think legendary performance like the 6.6L, but the 3.0L is still too new for me to trust it.

 

[Stbentoak]

I've had a Ram Cummins, A Grand Cherokee Diesel, a Jaguar Diesel, and this LM2 diesel since 2005, and have never had a DEF poor quality issue. I've used WAL MART DEF the whole time. Once I had DEF error that was not a showstopper, but it was a software/ sensor programming issue... But not bad DEF. I have a refractometer and know how to use it.
The LM2 has been the most consumer friendly, short trip tolerating, fastest warmup and regen, smoothest and quietest of all I've had.
Sure, some have had problems, but compared to the amount of them out there? I'd say they are the best and most dependable choice in these vehicles out there today.
Rest of my vehicle has had some quirks.. but mostly been rock solid from day one. When Tahoe/Yukon Drops the DMAX... It's time for me to find another brand...

 

[DuraYuk]

And yet you’re still saying I said things I didn’t. Absolutely hilarious. Try taking off your bias and read all my posts again. Maybe the you’ll actually understand the things I’ve said because everything you say I said is so far off base it isn’t even funny. I never said the Germans do it better, I said their suspensions aren’t crashy. My gosh you cannot read.

Sure, the older ones have problems. I’ve yet to see where I said they didn’t. But a 5 minute search doesn’t pull up a sea of threads on low mileage trucks all needing new engines. Not even in the K2 trucks!

It is totally fine that you don’t want an older vehicle, but just say that. Someone has to waste their money buying it new so I can buy used (not that I will ever be buying of these used, just to be clear). If you want a new vehicle and don’t GAF about how much it costs or anything else, go for it. It’s your money. That being said, that doesn’t make anything I’ve said not the truth because you don’t want to hear it and no matter how much you twist it to say something I never said. I’m not the only person in the world who thinks these newer trucks are insanely overpriced for the quality you get.

Maybe I'm reading someone else's posts..or maybe you mean something different than what you post. Or maybe you are making generalizations using a small study sample.

As for issues happening early you do realize that when things fail the likely hood of it failing sooner is higher than later from a production stand point ?

I literally pointed out everything you said and quoted it yet now your saying you don't mean those things? It's like the twilight zone.

I guess 100 posts about issues mean the production run of over 100k units every year since 2021 means they are all lemons. Good logic there.

I'm also pressing all over my wife's yukon to make it creak and Crack but I guess mine doesn't exhibit the issues your talking about. Must be a fluke. Just went thru Atlanta and didn't feel the crashyness....but guess that's a fluke too.. have 15k miles on it and put the cheapest def I can find in it but no errors... probably a fluke too.

Thankfully my wife's yukon is solid but by your logic it'd a fluke...gonna go play the lottery now and test my luck there....

Still curious to what your fond of? What is your vehicle of choice? 1991 camaro rs?

I'm not blind to issues either. We all know lifters on 6.2, but even that by the numbers is less than a few percent of total production. Look at other generations. They all have failing lifters. 10 speed is solid. Other generations all have way more transmission issues. Creaks and rattles? Maybe the occasional one here but far far from the norm. Look at other generations. Good luck. Crashyness? Don't think ive heard that ever except for some 22inch and performance models complaining of a stiff ride. Evaporator cores? Have not seen or heard of that until you mentioned it. I enjoy a good discussion but let's stick to the facts here.

You work at a dealer in ga? If you do I probably know all the people around you.

To get back to the OP the 6.2 is solid but has potential lifter issues. It's the performance choice no doubt. The duramax is much better on gas. Has much less chance of failures so far but does require a bit more maintained but nothing crazy.

Not really a bad choice either way.

 

[91RS]

I am talking facts, I’ve seen it personally and then see tons of owners and other techs online experiencing the exact same things. You haven’t quoted anything I actually said, you twisted everything I said into your own words that were completely different from what I said.

You're not interested in a good discussion because the only facts are what you say and anyone who thinks or has experienced something different is wrong and a liar.

Try a Google search to see what crashy suspension is.

I’m not going to keep going round and round with you because you think I’m wrong. Some agree with me and some agree with you. It’s your money do what you want and so will the OP. My only parting advice is to buy the warranty.

 

[DuraYuk]

I am talking facts, I’ve seen it personally and then see tons of owners and other techs online experiencing the exact same things. You haven’t quoted anything I actually said, you twisted everything I said into your own words that were completely different from what I said.

You're not interested in a good discussion because the only facts are what you say and anyone who thinks or has experienced something different is wrong and a liar.

Try a Google search to see what crashy suspension is.

I’m not going to keep going round and round with you because you think I’m wrong. Some agree with me and some agree with you. It’s your money do what you want and so will the OP. My only parting advice is to buy the warranty.

Me too. Seen way too much. Was hoping to get your idea of a good vehicle you'd be proud to call your own.

 

[91RS]

You’re going to be disappointed because there really isn’t anything new I’m dying to buy. I think quality across all brands is crap now because all the manufactures realized people will pay over sticker price to get new cars, even though the quality isn’t as good and even if if features have been removed. I think everything is unnecessarily complicated now and pretty high risk to own outside of warranty. All these gimmicky features that are nice, sure, but far from necessary. All these modules that are one-time burn to cut out buying used parts and GM discontinuing everything on 5 year old vehicles is disgusting business practice. I’ve always loved GM products despite the lower quality but the way GM does not support the vehicles they sell for very long any more is a huge turn off and likely the reason I consider other brands.

I’m not a new car buyer, if you can’t tell. I don’t see the value in it and I never have. The depreciation lost in the first 3 years of ownership is insane. Especially now with a mundane family vehicle costing $80k but is still worth $30k in 7 years is not something I can stomach and I’m not sure how much money people are making a year that can stomach that. I prefer to buy a little older used cars and so I can get something like an Escalade for new base model Tahoe money.

I currently have a 2008 and 2013 Escalade and will be sticking with them for as long as I can. I do not like the T1 trucks at all and the K2 trucks ride so damn bad (and you CAN quote me on that), that I don’t think I could get passed that. I love the 18-20 Yukon Denali but they’re so rough. The 900 body style is where I’m happy for now. They’re the perfect blend of new enough not to look or feel archaic but not cost $80k+ but, due to the age, at this point need some restoration to be that good, which most people won’t do or use cheap parts and don’t get the result. I replaced the entire suspension on both with all new GM parts and put Michelins in them and they’re good to go. Sure, your T1 rides a little better but it isn’t $60k better (or $100k better if we’re comparing to a 23 Escalade).

In the interest of answering your question, if money and cost of ownership didn’t matter, I would probably look at a Navigator, BMW X7, or Mercedes GLS if it were replacing the family car. If replacing mine, a Porsche Macan GTS. I love the E63 AMG for a non-SUV. Twin turbo engines are on my no-go for out-of-warranty ownership though. I really tried to buy a 14-16 E63 6 months ago and couldn’t do it.

 

[DuraYuk]

You’re going to be disappointed because there really isn’t anything new I’m dying to buy. I think quality across all brands is crap now because all the manufactures realized people will pay over sticker price to get new cars, even though the quality isn’t as good and even if if features have been removed. I think everything is unnecessarily complicated now and pretty high risk to own outside of warranty. All these gimmicky features that are nice, sure, but far from necessary. All these modules that are one-time burn to cut out buying used parts and GM discontinuing everything on 5 year old vehicles is disgusting business practice. I’ve always loved GM products despite the lower quality but the way GM does not support the vehicles they sell for very long any more is a huge turn off and likely the reason I consider other brands.

I’m not a new car buyer, if you can’t tell. I don’t see the value in it and I never have. The depreciation lost in the first 3 years of ownership is insane. Especially now with a mundane family vehicle costing $80k but is still worth $30k in 7 years is not something I can stomach and I’m not sure how much money people are making a year that can stomach that. I prefer to buy a little older used cars and so I can get something like an Escalade for new base model Tahoe money.

I currently have a 2008 and 2013 Escalade and will be sticking with them for as long as I can. I do not like the T1 trucks at all and the K2 trucks ride so damn bad (and you CAN quote me on that), that I don’t think I could get passed that. I love the 18-20 Yukon Denali but they’re so rough. The 900 body style is where I’m happy for now. They’re the perfect blend of new enough not to look or feel archaic but not cost $80k+ but, due to the age, at this point need some restoration to be that good, which most people won’t do or use cheap parts and don’t get the result. I replaced the entire suspension on both with all new GM parts and put Michelins in them and they’re good to go. Sure, your T1 rides a little better but it isn’t $60k better (or $100k better if we’re comparing to a 23 Escalade).

In the interest of answering your question, if money and cost of ownership didn’t matter, I would probably look at a Navigator, BMW X7, or Mercedes GLS if it were replacing the family car. If replacing mine, a Porsche Macan GTS. I love the E63 AMG for a non-SUV. Twin turbo engines are on my no-go for out-of-warranty ownership though. I really tried to buy a 14-16 E63 6 months ago and couldn’t do it.

Wow, Interesting lol. Thanks for the reply. We can agree to disagree.

 

[EvergreenZ71]

The lm2 is extremely reliable. The 21+ interiors do not creak at all.

I’m asking more than stating, but did the GMT900 series dashes start cracking within the first 3 years?

My 2010 was already cracked when I got it in 2018, but my 2009 was still good in 2019.

And my 2002 went to the salvage yard with all of its interior plastics intact and no leaks in the exterior lighting that I’ve seen in newer trucks (and I had aftermarket holes in the exterior lights for strobes that still never leaked).

 

[21highcountry]

I don’t know how you can say that. The materials feel super cheap, every trim piece creaks and moves when you press on it, the suspension is still crashy in rough roads, the lifters don’t last 5k miles, the 6.2L are spinning bearings left and right, oil leaks like crazy, evaporator cores, and so much more.

I mean I’ve got a 21 Tahoe high country with the 6.2, it’s got 61k on it and not one issue, the only thing that worries me is the weird shift points on the 10 speed tranny that’s in it, so far 6.2 is rock solid

 

[DuraYuk]

I’m asking more than stating, but did the GMT900 series dashes start cracking within the first 3 years?

My 2010 was already cracked when I got it in 2018, but my 2009 was still good in 2019.

And my 2002 went to the salvage yard with all of its interior plastics intact and no leaks in the exterior lighting that I’ve seen in newer trucks (and I had aftermarket holes in the exterior lights for strobes that still never leaked).

Some did. Some didn't. Same with the gt800 you had. I will say the gmt800 had way more cracked interior plastics then the 900. The 900 had a slightly softer plastic that would help with cracking. Most of the 800s also had the foggy lights due to water intrusion. And the exterior door handles would fall off all the time.

So your 2002 was above average in those cases.

 

[EvergreenZ71]

Some did. Some didn't. Same with the gt800 you had. I will say the gmt800 had way more cracked interior plastics then the 900. The 900 had a slightly softer plastic that would help with cracking. Most of the 800s also had the foggy lights due to water intrusion. And the exterior door handles would fall off all the time.

So your 2002 was above average in those cases.

Wow. My 02 dash (and whole truck) went away at 18 years with an intact dash and no leaks in the headlights. Saw many 900s with fogged headlights & taillights though mine have been free of that (except for an aftermarket set).

 

[wombat]

Drove from Florida to Texas this weekend. I have a 23 Tahoe with 6.2 liter and Corsa exhaust. Tahoe has 3500 miles. I did not drive in Sport mode like I normally do but I turned off the Auto Stop. Below are the mpg results. (Used the DIC readings)

Full trip - mostly hiway at speed of 75-80 mph
Miles driven - 770 miles
Avg speed - 68.0 miles/hr
Avg mpg - 20.7 miles/gal

Last tank of gas - mostly hiway at 75-80 mph but 100 miles at 65-70 mph due to rain
Miles driven - 407 miles
Avg speed - 66.1 miles/hr
Avg mpg - 21.3 mpg

I have pictures if you want verification.

I was pleasantly surprised with the fuel efficiency of this rig.