Jun 23, 2023 · Here to learn a little about my 2024 GMC 2500 with the 6.6 gas engine and the truck in general. I retired and this is only my fourth GM product in 52 years of driving.

Jan 26, 2023 · Deep Dive: GM's New 6.6L L8T V8 GM's new 6.6L L8T gasoline V8 engine is a cast-iron unit with aluminum heads that delivers a stout 401 horsepower and 464 ft-lb of …

Dec 1, 2023 · 2021 comes with only 1 gas engine, the 6.6L. It replaced the 6.0L engine The L8T (6.6L) does not use GM fuel saving technologies such as Active Fuel Management (AFM), …

Dec 20, 2024 · Beginning with the 2020 model, the 2500's stopped using the 6.0 and introduced a 6,.6L gas (rpo LT8), and still with the HD version of the GM 6 speed.

Mar 28, 2025 · I bought a new 2025 Silverado 2500HD with the 6.6 gas engine. Everything I researched said the fuel economy was 14-16 city/ 17-18 hwy, but after driving it...

Feb 19, 2025 · Hearing chirps or squeaks from your GM 6.2L or 6.6L V8? Don’t worry—these engine noises are normal. Here’s why your truck sounds different.

Feb 14, 2025 · I bought a new 2024 model Chevrolet 2500HD with the 6.6 L8T gas in late 2023. So far I have driven it about 27,000 miles with zero issues. Has anyone reached 200,000 or …

Nov 9, 2019 · Anyone have a new 2020 HD with 6.6L gas engine? I'm curious what kind of gas mileage you have been getting, particularly when unloaded. Thanks!

Jun 6, 2024 · Thank you. That’s about what I do. Although I used to run a ‘01 2500HD with 6.0 until it told me to change. 213k before I sold it and never a problem. But that was a much …

Feb 12, 2024 · Hello all. Wanted to introduce myself and express my happiness with the 6.6 gas in my 2021 2500HD double cab long bed 4x4 auto WT. Truck has performed well for my …