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2004 Chevrolet Silverado 2500 HD 6.6L Poor Idle Quality, Misfire
Posted to GM Driveability on 1/25/2018 7 Replies

This pickup came in and has a misfire that occurs at idle mainly rarely does it off idle. cylinder 3 is the one with the misfire no codes other than p1229. I've replaced the injector as well as the new injector connector pig tail. I've inspected the wiring...

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  Related Documents & Media  2004 Chevrolet Silverado 2500 HD

 
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car Vehicle Data

2004 Chevrolet Silverado 2500 HD

VIN [No VIN Available]
Engine6.6 L / 8 cyl / DIESEL
Trans5-speed Automatic (Electronic)
DeliveryFuel Injection
EmissionsOBD-II Compliant
SymptomsPoor Idle Quality, Misfire
OccursAlways, Intermittently

Trouble Codes

P1229Fuel Injector 3 Output Circuit Malfunction
Message Closed

car Vehicle Data

2004 Chevrolet Silverado 2500 HD

VIN [No VIN Available]
Engine6.6 L / 8 cyl / DIESEL
Trans5-speed Automatic (Electronic)
DeliveryFuel Injection
EmissionsOBD-II Compliant
SymptomsPoor Idle Quality, Misfire
OccursAlways, Intermittently

Trouble Codes

P1229Fuel Injector 3 Output Circuit Malfunction