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2008 Chevrolet Silverado 1500 WT 4.3L Misfire
Posted to GM Driveability on 11/25/2024 29 Replies

We are working on this 4.3. It misses under load and will backfire through the intake. Seems like basic ignition but it's all new. We did the crank variation learn and no change. What are we missing?

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  Related Documents & Media  2008 Chevrolet Silverado 1500 WT

 
Message Closed w/Summary

car Vehicle Data

2008 Chevrolet Silverado 1500 WT

VIN 1GCEC14X78
Engine4.3 L / 6 cyl / GAS
Trans4-speed Automatic (Electronic)
DeliveryFuel Injection
EmissionsOBD-II Compliant
SymptomsMisfire
OccursUnder Load

Trouble Codes

P0306Cylinder 6 Misfire Detected
Message Closed w/Summary

car Vehicle Data

2008 Chevrolet Silverado 1500 WT

VIN 1GCEC14X78
Engine4.3 L / 6 cyl / GAS
Trans4-speed Automatic (Electronic)
DeliveryFuel Injection
EmissionsOBD-II Compliant
SymptomsMisfire
OccursUnder Load

Trouble Codes

P0306Cylinder 6 Misfire Detected