6.7L Diesel – Diesel Fuel Conditioning Module (DFCM) General Service Bulletin (GSB)
Some 6.7L diesel vehicles may experience drivability concerns and or excess noise from the Diesel Fuel Conditioning Module (DFCM) due to low fuel pressure.
The most common cause of excess noise and/or low fuel pressure is a restricted primary fuel filter. This GSB references the inspection and bleed procedure for the 6.7L diesel low pressure fuel system inspection, specifially the DFCM.
See GSB: G0000035 for details.
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- Cleans and lubricates the fuel system, including fuel injectors, carburetor and combustion chamber
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- Increases power and acceleration by improving fuel flow and reducing deposit buildup
Last update on 2026-06-18 / Affiliate links / Images from Amazon Product Advertising API
- Stiction Eliminator for engine oil reduces wear while restoring compression and power
- Stiction Eliminator protects rings, injectors and turbo - anything that the oil touche
- Diesel Extreme cleans injector tips and disperses moisture
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Last update on 2026-06-09 / Affiliate links / Images from Amazon Product Advertising API
- Prevents fuel gelling
- Protects against fuel-filter icing
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- Contains Slickdiesel Lubricator to protect fuel pumps and injectors from increased wear caused by poor quality Ultra Low Sulfur Diesel (ULSD) fuel
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Last update on 2026-06-09 / Affiliate links / Images from Amazon Product Advertising API
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