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 …

May 7, 2025 · 2023 High Country Duramax: probably owned/drove 15+ 3/4 tons (all GM) in my life (73 yr old Colo. construction owner). Bought this truck one yr old with 12K; now 32 K and 90+ …

A forum community dedicated to Chevy and GMC Duramax diesel owners and enthusiasts. Come join the discussion about modifications, towing, classifieds, troubleshooting, maintenance, and …

Sep 2, 2024 · Hello, new to this forum. Thinking about purchasing a 23 or 24 GMC Sierra with the 3.0 Duramax. I drive about 10 miles each way to work, mixed freeway and city. Reading about …

Nov 15, 2024 · Notably, all affected units covered by GM Safety Recall number N242454440 are equipped with Duramax diesel engines. Vehicles from the same nameplates and model years …

Nov 25, 2024 · I have a 2022 3500 dually Duramax now and haven't had any problems so far and was wondering if there is any advantage to buying a new truck? Thanks in advance for any …

Oct 16, 2022 · The Service Emissions System warrning and countdown has disappeared I've driven close to 200 miles since then and no SCR related codes have returned. NOX sensors …

Feb 18, 2021 · I know I know, theres tons of information pertaining to this problem. However I haven't quite found an asnwer to my own problem. Drove to the store no problem, come out a …

Jul 17, 2021 · Hi Everyone, I'm having trouble finding any information/diagrams on the location of the fuel rail pressure sensor. I have removed the cold air pipe and its still not visible. any …

Mar 1, 2025 · With these failures seeming to increase I wanted to put a thread together of just the failure info, NO discussion on it. This way we can see some statistics on the failures/failure …