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2004 Chevrolet Silverado 2500 HD LT 6.6L Excessive Emissions, Misfire
Posted to GM Driveability on 10/15/2012 8 Replies

Hi. This duramax had a tuner (bullydog) and is overfueling off idle, knocking at idle sometimes and misses on number 7 at idle.. I recently repaired two injector connectors that were a little burnt on cyl 2 and 6. now it runs better at idle. Cylinder #1 has a ...

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car Vehicle Data

2004 Chevrolet Silverado 2500 HD LT

VIN [No VIN Available]
Engine6.6 L / 8 cyl / DIESEL
Trans5-speed Automatic (Electronic)
DeliveryFuel Injection / LLY engine code
EmissionsOBD-II Compliant
SymptomsExcessive Emissions, Misfire
OccursUnder Load, on Accel, Off Idle
Message Closed w/FIX

car Vehicle Data

2004 Chevrolet Silverado 2500 HD LT

VIN [No VIN Available]
Engine6.6 L / 8 cyl / DIESEL
Trans5-speed Automatic (Electronic)
DeliveryFuel Injection / LLY engine code
EmissionsOBD-II Compliant
SymptomsExcessive Emissions, Misfire
OccursUnder Load, on Accel, Off Idle