2005 Chevrolet Silverado 2500 HD 6.6L Poor Idle Quality, Misfire, Poor Fuel Economy
This vehicle came to us after Chevrolet dealer changed filters and told customer "that is as good as it runs". Customer complains of knocking noise in engine up to approximately 1700 rpm, runs rough at idle and fuel mileage dropped from 16 mpg to 12 mpg. No MI...
FIX posted 10/13/2013
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Message Closed w/FIX
Vehicle Data2005 Chevrolet Silverado 2500 HD
Trouble Codes
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Message Closed w/FIX
Vehicle Data
2005 Chevrolet Silverado 2500 HD
VIN | 1GCHK232X5 |
Engine | 6.6 L / 8 cyl / DIESEL |
Trans | 4-speed Automatic (Electronic) |
Delivery | Fuel Injection / Diesel |
Emissions | OBD-II Compliant |
Symptoms | Poor Idle Quality, Misfire, Poor Fuel Economy |
Occurs | Always, Cold, Hot |
Misc. | No MIL Light |
Trouble Codes
P0300 | Multiple Misfire Detected |
P0301 | Cylinder 1 Misfire Detected |
P0302 | Cylinder 2 Misfire Detected |
P0307 | Cylinder 7 Misfire Detected |