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2005 Chevrolet Silverado 2500 HD 6.6L Poor Idle Quality, Misfire, Poor Fuel Economy
Posted to GM Driveability on 10/8/2013 12 Replies

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...

12 Replies Received (View Replies)

  Related Documents & Media  2005 Chevrolet Silverado 2500 HD

 
Message Closed w/FIX

car Vehicle Data

2005 Chevrolet Silverado 2500 HD

VIN 1GCHK232X5
Engine6.6 L / 8 cyl / DIESEL
Trans4-speed Automatic (Electronic)
DeliveryFuel Injection / Diesel
EmissionsOBD-II Compliant
SymptomsPoor Idle Quality, Misfire, Poor Fuel Economy
OccursAlways, Cold, Hot
Misc.No MIL Light

Trouble Codes

P0300Multiple Misfire Detected
P0301Cylinder 1 Misfire Detected
P0302Cylinder 2 Misfire Detected
P0307Cylinder 7 Misfire Detected
Message Closed w/FIX

car Vehicle Data

2005 Chevrolet Silverado 2500 HD

VIN 1GCHK232X5
Engine6.6 L / 8 cyl / DIESEL
Trans4-speed Automatic (Electronic)
DeliveryFuel Injection / Diesel
EmissionsOBD-II Compliant
SymptomsPoor Idle Quality, Misfire, Poor Fuel Economy
OccursAlways, Cold, Hot
Misc.No MIL Light

Trouble Codes

P0300Multiple Misfire Detected
P0301Cylinder 1 Misfire Detected
P0302Cylinder 2 Misfire Detected
P0307Cylinder 7 Misfire Detected