Jun 18, 2024 · L5P Issues, Issues, and More Issues Jump to Latest 5.1K views 11 replies 5 participants last post by 44Dave Oct 25, 2024 D

Mar 11, 2025 · NOX sensor 2018 2500HD Duramax L5P TexanKirk1 Jun 6, 2024 2 Replies 20 Views 5K Sep 18, 2024

Feb 24, 2026 · A forum community dedicated to Chevy and GMC Duramax diesel owners and enthusiasts. Come join the discussion about modifications, towing, classifieds, troubleshooting, …

Nov 25, 2022 · Everything We Know About the 2024 Duramax L5P 6.6L Engine Gale Banks cracks open a new 2024 Duramax 6.6-liter diesel engine and compares the parts side-by-side with a 2023 …

Apr 24, 2025 · I have a 2017 L5P, it’s deleted and tuned. Had a head gasket failure. Ran fan coming in my shop started great, sounded great etc. get the cab back on, plug everything up whole nine, crank …

May 6, 2020 · Since we dont hear much about the L5P performance stuff on here, lets drive a little food up to feed some hunger i have. Outside of the typical factory ecm limitations and what banks is …

Apr 21, 2025 · I just traded in my 2021 GMC 3500 for a 2025 3500. This is my 6th duramax truck and this new one is using a lot of fuel. It's at the point where there is no way I would have bought this …

Apr 28, 2025 · First post here. I recently decided to upgrade to a newer duramax. Been driving an 05 LLY, 222k miles and never an issue but it’s an extended cab and the 4 door is sounding better with a …

Jul 20, 2022 · Looking at a L5P Duramax. Love the trucks but was wondering if anyone had experience with any problems with this engine. Sent from my iPhone using Tapatalk

Aug 7, 2024 · Our L5P tuning offers a more responsive driving experience with plenty of power/torque available when needed. While cruising, the fuel economy is roughly 5-10% better than factory tuning. …