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Duramax Fifth Generation: 2011-2016 (LML) Discuss the fifth generation (2011-2016) of the 6.6L Duramax diesel engine & associated components. Engine related discussion ONLY.

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Old 11-15-2018, 08:13 PM   #1 (permalink)
dk2429
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Fuel filter life sudden drop

In a 2015 Duramax doing a hot shot trip from Houston to Pennsylvania. On my way back on I-81 in Virginia..

Fuel filter was 66% when I left Pennsylvania. Now it's all of a sudden 0%. No lost power. Still pulls these grades like nothing with the trailer..

What's the deal? Bone stock from front to rear.

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Old 11-16-2018, 10:16 AM   #2 (permalink)
Rvn4me
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Might be something in here few threads down.
https://www.dieselplace.com/forum/63...-oil-life.html
Google “duramax LML fuel filter ife dropped to 0” lots to read.


Last edited by Rvn4me; 11-16-2018 at 10:23 AM.
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Old 11-18-2018, 03:44 PM   #3 (permalink)
lynn1130
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My first guess would be bad fuel at one of the stations.
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Old 11-18-2018, 04:48 PM   #4 (permalink)
97chevor
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Time to change the fuel filter. Usually you ll get 2 warnings like that, the third time the truck will reduce power.
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