I bought a 2025 GMC Sierra 1500 Denali Ultimate Duramax and overall, I love the truck. It's an absolute joy to drive, and the engine is fantastic. Unfortunately, with barely 3k miles on the …

Feb 10, 2025 · As the title states, looking to get some real-world feedback from 2024 and/or 2025 Duramax owners. A little backstory. I had a 2024 2500LT. Beautiful truck. Zero issues. Sold …

Dec 8, 2024 · The Diesel Exhaust Fluid (DEF) tank may appear to be empty shortly after beginning a towing trip or it may be difficult to properly fill the DEF tank on some 2020-2025 …

Jan 13, 2024 · My experiences have always been good, my previous Truck was 2006 Chevy 2500 HD with Duramax Diesel , sold it in 2021 with 320,000 miles and still ran and looked new. I do …

Nov 24, 2024 · Just like past Duramax's I have owned, it is a very distinct smell. And, the instant mileage is right where past trucks were when in regeneration (~1/2 of normal - or 10-14 at 65 …

Nov 24, 2024 · What model year has the same GCWR for the 2500 and 3500 and where did you get this information? FWIW I'd always get the 3500 vs the 2500 outside of a commercial …

Feb 18, 2021 · 07.5 Silverado 2500HD LMM aFe 4" exhaust turbo back aFe CAI Sinister Diesel EGR delete, PCV reroute and EFI Live on the fly

Nov 27, 2021 · Hey everyone. I'm new to the diesel world. I own a 2021 GMC SIERRA 3500 SLT. I want to start changing my own oil. Should I use conventional or synthetic? What is the best …

Dec 5, 2024 · What did Chevy do to ruin a perfectly good engine? I had a 2020 and was getting 18mpg mixed fuel mileage. My new 2025 with same engine, transmission and rear end is …

May 25, 2023 · Does anyone have any real world data on the 2024 6.6 Gas V/S 6.6 Diesel fuel economy. Going next week to order my truck, and I'm seriously torn on which to get. A camper …