A clogged fuel filter on the 6.6L Duramax causes rough running and loss of power. Change it regularly to keep the CP4 pump safe.
engine
🚗 Chevrolet Silverado 2500
Easy
How to Fix Chevrolet Silverado 2500 Duramax Fuel Filter
Red Rocket
·
August 7, 2026
·
⏱ 30 min
·
2011-2019 Chevrolet Silverado 2500
0
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Step-by-Step Instructions
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1
Locate the fuel filter housing on the driver frame rail.
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2
Drain water from the bowl.
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3
Remove the filter cap and old filter.
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4
Install the new filter with the housing sealed.
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5
Prime the system and start the engine.
Tools & Parts Needed
- 🔧 New fuel filter, Diesel fuel, Rags
Frequently Asked Questions
How long does this fix take?
30 min
Do I need special tools?
Yes — see the Tools & Parts list above.
Is this covered under warranty?
Check your vehicle warranty. Some repairs may be covered, especially if the issue is a known defect.
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