2017-2024 DURAMAX: Fuel Filter Replacement (L5P)
Time: 15-30 minutes
When fuel pressures reach 30-40,000 psi through a nozzle as small as .007", you'll want to make sure you have clean fuel. Problems such as rough idle, hard start, no start, limp-mode, etc can be traced back to bad fuel gumming up injectors, pumps, and filters. It is imparative on diesel engines to routinely replace the fuel filter.
Every 10,000 to 25,000 miles, with 15,000 miles being pretty standard.
The video below demonstrates the fuel filter replacement on a 2017-2024 Duramax 6.6L with the L5P Engine. Be sure to reset the fuel filter percentage remaining indicator on the vehicle's information display as part of the service.
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