Anybody have the Duramax 3.0 in a 2024 Tahoe/Yukon?

[Jay P]

2 hours ago, Delta Tango said:

This 3.0 liter diesel is an Opel engine out of Germany, not Japanese like the larger Duramax marketed diesels. For your FYI.

The 6.6l is and always has been built in Ohio. Isuzu helped GM design it but they have been out of the picture for a long time and sold their part of DMAX Ltd a couple of years ago (after the initial design they helped with, it was mostly an investment for Isuzu). 

The 3.0l diesel was mostly designed in Turin Italy (with Opels help) and has always been built in Flint, MI. It was a new engine from the ground up.

The 2.8l 4 cylinder diesel used in the Colorado/Canyon was an existing VM Motori engine and that company is now owned by Stellantis. It was owned by Fiat at the time when GM started using it.

Edited March 4, 2024 by Jay P

[Delta Tango]

Thanx for the intel.

 

I've been to Turin, and it is really an automotive engineering capital! 

[Ray1225]

2024 Tahoe 3.0

Only a week into ownership. So far zero issues I do love the MPGs avg 28 to 32, only put 300 miles on it so far

[YukonTorqueXL]

Bought a used 2023 GMC Yukon XL SLT 3.0L Duramax in December 2024 with 7,900 on it. Absolutely love the truck and the diesel was the right choice as I'm seeing about 50% better fuel economy then a friend of mine who has a 2021 Suburban with the 5.3L. The vehicle did indicate the best MPG seen was 34.6 mpg when I bought it. Not sure how fast or what road someone was driving on but still impressive. My first 100 mile road trip saw 28 mpg avg and included mostly highway. We recently just took a longer road trip from outside of Philadelphia to Sunday River ME. Roughly 500 miles one way in very cold, wet and snowy conditions. Truck was loaded with 4 people, bags, food and Thule roof box for the skis. We avg 24 mpg and was all highway except for the last 60 miles. The computer indicated an additional 112 miles of range when we arrived. The roof box does give a 3-4 mpg penalty which I have seen in other vehicles of mine as well. Still given how big of a vehicle this is, I'm extremely happy with the result. I am running opti-lube XPD additive as well. On the way home the first 60 miles of the trip was more back roads to get to I-95 and we avg 28 mpg for that portion of the drive. The rest of the trip avg was 24 mpg. I do run in 2WD instead of AUTO as much as possible when road conditions allow. 95% of the trip was 2WD. I haven't truly tested if being in 2WD does provide better fuel economy or not over AUTO. Anyone else have a good read on this?

[redwngr]

On 10/20/2024 at 5:54 PM, Ray1225 said:

2024 Tahoe 3.0

Only a week into ownership. So far zero issues I do love the MPGs avg 28 to 32, only put 300 miles on it so far

Any update?

 

Full tank mpg numbers?