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2017-2024 DURAMAX: Fuel Filter Replacement (L5P)

Time: 15-30 minutes

Difficulty: easy

Cost: $15-30


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 imperative 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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Fuel Filter Socket

1-7/16" Socket

Swivel Oil Filter Wrench

Swivel oil filter wrench. Fits most standard size oil filters.

Disposable Shop Towels

Scott Blue Shop Towels in a Box

GM Fuel Filter TP1015

GM TP1015 diesel fuel filter w/ seals

Disposable Gloves

8mil disposable work gloves

3/8" Torque Wrench

10 - 100 ft lb 3/8" drive torque wrench.

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