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  1. L5P - DuramaxDiesels.com

    Jun 27, 2025 · L5P with 100,000 miles and a stutter or slip at 1500 RPM Chrisg0731 Mar 21, 2022 Replies 18 Views 6K Nov 20, 2023

  2. Duramax Seventh Generation: 2020+ (L5P) - Diesel Place

    Jul 29, 2021 · Discuss the seventh generation of the 6.6L Duramax diesel engine & associated components. Engine related discussion ONLY.

  3. DEF fluid level sensor issues | DuramaxDiesels.com

    Dec 23, 2024 · I have a 2017 2500HD LT L5P with a "DEF EMPTY" issue which the tank is COMPLETELY FULL. WTFO? The DEF pump was just replaced 5 months ago and has been …

  4. Service Exhaust Fluid System/Reductant Pressure Low

    Feb 23, 2023 · I just purchased a 2018 L5P with 184k mi. I have a 'Service Exhaust Fluid System' message; followed by 'See Owner's Manual Now'; then '58 Miles Until 65 mph Max Speed'. I …

  5. L5P will barely start, then die Please Help - duramaxdiesels.com

    Sep 27, 2024 · It was wrecked, it’s possible the doc or dpf or scr are broke and plugging the exhaust. After driving that first few miles it started plugging all flowing holes up. What’s your …

  6. 2024 Duramax issues? - DuramaxDiesels.com

    Jul 23, 2023 · And there’s been lots of software glitches in the infotainment system, locked black screens, GPS issues, map issues, and when I’ve used the new system it seems really slow to …

  7. 2018 lift pump replacement - Diesel Place

    Jan 3, 2025 · Did you install another factory fuel pump, or an aftermarket lift pump? I'm looking for a high-capacity factory replacement. 2024 Chevrolet 3500HD Z71, LTZ, 4x4, 6.6 ltr. L5P long …

  8. L5P Injectors - DuramaxDiesels.com

    Jan 25, 2018 · The L5P injectors are solenoid injectors all the previous year operate on piezo actuated.. the systems will not interchange. the up side it will be much easier to get a stand …

  9. L5P P0191 Code & Fuel Pressure Sensor Replacement - Diesel Place

    Sep 7, 2021 · I bought a used 2018 2500HD Duramax L5P and a week after owning got a reduced engine power warning and got it scanned and received the P0191 code and took it …

  10. 2020 L5P Throbbing Sound While Idling - Diesel Place

    Nov 14, 2019 · Just traded my 2018 2500 Duramax for a new 2020 2500 L5P and notice a throbbing sound at idle when the engine is warmed up ( currently 2200km). Dealership...