Upgrade to a 2026 AT4 with the 3.0L Duramax

[Blade8971]

Looking at trading in my current ride a 2020 Trailboss with the 6.2L for an 2026 AT4 with the 3.0 Duramax.

From what I heard that the 3.0 Duramax is a very good engine.

Just wondering from others who have similar trucks with this engine - pro's and con's.

Thanks

 

[Coastie05]

For reliability, that would be my second choice but it’s better than the 6.2 and 5.3. The plus is that the fuel economy is excellent. 

[StingerZ16]

I have really enjoyed my 3.0.

Quite with lots of power and get great fuel mileage.

Not had any problems but still in break in period.

[Jus Cruisin]

I have a 2025 GMC 1500 Sierra Denali Ultimate with the 3.0l. I had an issue with mine at 5,000 miles. Engine siezed. It was replaced and trouble-free with the replacement. I'm going to order a 2027 GMC Yukon once the order banks open and it'll be another 3.0l.