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2027 3.0 l Duramax

Sparky134
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newdude Senior Enthusiast

newdude

Posted
Posted
54 minutes ago, Sparky134 said:

Will the the engine be engineered to solve the problems plaguing the 2019-2026 Engines?

 

 

What problems?  

Atlas Senior Enthusiast

Atlas

Posted
Posted
55 minutes ago, newdude said:

\What problems?  

 

Just a guess based on the mentions I've seen on this forum...

 

Failing coolant control valves (LM2, LZ0)

No start / long crank issues (LM2)

Thrust bearing failures (LZ0)

Timing chain failures (LM2)

 

Fingers crossed GM has more revisions and updates in the work because the 3.0 is awesome (when it can be trusted).

newdude Senior Enthusiast

newdude

Posted
Posted (edited)
1 hour ago, Atlas said:

 

Just a guess based on the mentions I've seen on this forum...

 

Failing coolant control valves (LM2, LZ0)

No start / long crank issues (LM2)

Thrust bearing failures (LZ0)

Timing chain failures (LM2)

 

Fingers crossed GM has more revisions and updates in the work because the 3.0 is awesome (when it can be trusted).

 

 

...was looking to see what the 3 post OP had to say since they've got a personal issue here and 3 different threads they made within the same time period...just today....and then regurgitating that some owners on facebook and other forums have issues which is a small number out of total ownership of 3.0 Duramaxes.  

 

 

 

 

Edited by newdude
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silveradosid Senior Enthusiast

silveradosid

Posted
Posted (edited)

i would say it is someone who bought a deisel and shouldn't have, they arenot meant to put around town or excessive idling. the brake thing is a gm problem, some do worse and some do bettter. i put 140k on my 2014 and was expecting the same on the 2020 but only got half of that mileage. a2020 with40k is not that many miles, my 2020 has 120k

Edited by silveradosid
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  • 2 weeks later...
Jus Cruisin Enthusiast

Jus Cruisin

Posted
Posted

I'll be buying another 3.0l when I replace my 2025 Sierra. I had an issue (engine siezed) but it was replaced and has been fine ever since. I'm spoiled with the excellent fuel economy to swap to a 6 2l or its replacement. 

Coastie05 Enthusiast

Coastie05

Posted
Posted

One can only hope that they will correct or have already corrected the issue. 

  • 2 weeks later...
jl6690506 New Member

jl6690506

Posted
Posted
On 2026/6/15 at AM5点43分, Sparky134 said:

该发动机的设计能否解决 2019-2026 年款发动机所面临的问题？

It's too early to say. The 2027 3.0L Duramax is based on the LZ0 engine with ongoing improvements, but there's no evidence yet that it has completely resolved all the issues seen in the 2019–2026 models.

diyer2 Senior Enthusiast

diyer2

Posted
Posted

I would only own a diesel if I towed regularly.

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