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6.5 vin S p0401, No egr flow from intake
Hello Guys , I have a 6.5 turbo diesel here. I have codes p0400, p0401 and a maf performance code. I have check all solenoids, hoses and have graphed the maf, and egr vacum . What I have come down to is the valve is working, soloniods are working but there is ... Login to read more. 
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| Engine | 6.5 L |
| Trans | 4-speed Automatic (Electronic) |
Vehicle Data
1997 Chevrolet K1500 Cheyenne 6.5L
| Engine | 6.5 L |
| Trans | 4-speed Automatic (Electronic) |
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