Chevy and GMC Duramax Diesel Forum
A forum community dedicated to Chevy and GMC Duramax diesel owners and enthusiasts. Come join the discussion about modifications, towing, classifieds, troubleshooting, maintenance, and more!
What, if any are the pros of a 2025 3500 Duramax vs a 2022?
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 pointers! Roy
2018-2021 Duramax Reliability and Durability
Jan 13, 2024 · I'm in the market to immediately buy a 2018-2021 SRW DieseI truck. I recently retired and for the past 5 years I've been planning on buying a 3500 SRW diesel Chevy Duramax or Dodge …
What’s the best oil for a L5P Duramax
Aug 29, 2025 · What’s the Best oil for L5P duramax, I currently run Rotella, and heard royal purple wasn’t as good as they use to be, what’s better than Rotella. Had a tick back at 70k miles and it was …
Duramax 3.0 Should I buy? - Chevy and GMC Duramax Diesel Forum
Mar 17, 2025 · 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 several …
DEF Heater Failures | Chevy and GMC Duramax Diesel Forum
Jun 22, 2022 · The DEF tank heater may be faulty on some 2020-2021 Silverado 1500, Silverado 2500HD/3500HD, Sierra 1500, Sierra 2500HD/3500HD; and 2021 Tahoe, Suburban, Yukon and …
Service Emission's System, 175 mi Until 65 MPH Max Speed. 2020 …
Feb 28, 2022 · Hello Everyone, I have a 2020 Sierra 2500 Duramax Denali, 27,000 miles. The DIC is showing the following two messages, (Service Emission's System, 175 mi Until 65 MPH Max Speed). …
Real world 2024 Gas V/S Diesel Fuel Economy - Chevy and GMC …
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...
information on l5p | Chevy and GMC Duramax Diesel Forum
Oct 5, 2016 · i am posting this from GM's service information, with a messed up hand so if there is spelling issue, sorry alot of information is carry over but i felt like posting some highlights to answer …
2020 3.0 Duramax DTC Codes - Chevy and GMC Duramax Diesel Forum
May 10, 2021 · Purchased a 2020 Silverado with 3.0 Duramax Dec 2020. At about 6500 miles got check engine light, and msg emission system requires maintenance and reduced...