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  1. PTO Install options | Chevy and GMC Duramax Diesel Forum

    Nov 11, 2020 · Hello all, I saw on the Chevy.com website that the new Allison 10 speeds have a PTO access panel built into them. has anyone added a PTO yet? Specifically I'm looking to …

  2. Using 100 Octane Fuel in ONAN Generators - Chevy and GMC …

    Aug 12, 2020 · Using 100 Octane Fuel in ONAN Generators Jump to Latest 4.5K views 11 replies 9 participants last post by Icutmetl Aug 14, 2020 C

  3. dual alternator - Chevy and GMC Duramax Diesel Forum

    Sep 28, 2017 · Looking through the build sheet on the truck and states that it had dual alternator. Don't want to sound stupid but what does it gain me and what is it used for or could be used for.

  4. 2025 Duramax 6.6L Fuel Mileage - Chevy and GMC Duramax …

    May 12, 2025 · I’m at 5K miles and had my first oil change at 4,400 miles. I just measured (added fuel/miles) 19 mpg driving at 79 mph on the highway with cruise control, no hard accelerations …

  5. Full synthetic or not? - Chevy and GMC Duramax Diesel Forum

    Dec 26, 2020 · I am getting ready to change oil in my wife's 2011 Duramax. Local shop's invoice listed that they had changed oil about 5K ago with synthetic. Invoice doesn't say "full" or …

  6. DIY Anti-Theft Kill Switch - Chevy and GMC Duramax Diesel Forum

    Jan 3, 2021 · Materials Needed: Mini Fuse socket connector In line fuse (10A, 16awg) 16awg wire 2 Female quick connector terminals 2 Ring terminals Switch,10amp capable Solder gun, …

  7. Duramax 3.0 Should I buy? - Chevy and GMC Duramax Diesel Forum

    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 …

  8. Normal Operating Temperature? - Chevy and GMC Duramax …

    Mar 6, 2012 · Hello, I've got a new to me LB7 and I think that the temperature is a little low. On all of my other vehicles (mostly GM), operating temp is 210, however I cant get the Duramax …

  9. Synthetic versus conventional oil - Chevy and GMC Duramax …

    Feb 20, 2021 · I have an L5P engine, 2018 with 45,000 miles. I have made regular oil changes with Shell Rotella T4 every 5,000 miles. I am considering changing to Shell T6, full synthetic …

  10. Oil recommendations | Chevy and GMC Duramax Diesel Forum

    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 …