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.

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 …

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...

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. The 2020 diesels …

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!

Dec 26, 2024 · 2024 Chevrolet Silverado 3500HD 6.6 gas engine 12-26-2024 Miles 19,886 Remove rear wheels and inspect brake pads found about 30% wear left. Remove front heels …

Dec 1, 2023 · My 8.1 doesn't. It gets a solid 10.5 mpg city too. 🤣 But what everyone else said is correct. The 6.6 in the 2500 and 3500 don't have AFM or other MPG 'tricks'. The main reason …

Mar 6, 2024 · The L8T engine, a 6.6-liter V8, stands as a testament to the enduring appeal of naturally aspirated power. Offering 401 horsepower and 464 lb-ft of torque, it combines robust …

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 21, 2025 · I have a 2024 Chevy 2500hd with the 6.6 gas and 10 speed transmission. I bought it new and it now has 39,000 miles. It's started to have a slight shutter at highway speeds …