2017-2019 6 L5P GM Duramax Fuel Related Model year 2017 marked some major changes for the Duramax fuel system. Finally, they forewent the status quo that had been hovering over this engine since 2001 with the only major change occurring in the 2011 model years with the LML engine. The fuel system featured on the L5P could best be described as a 100% complete overhaul. Amazon: duramax fuel filter wrench Amazon: duramax fuel filter wrench. Skip to main content. Lisle 14500 35/36mm Low Profile Fuel Filter Socket. 4.8 out of 5 stars 688. $8 $ 8. 49 $10 $10. Get it as soon as Thu, Aug 15. FREE Shipping on orders over $25 shipped by Amazon. Only 10 left in stock - order soon.