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2006 Hummer H3 3.5L Surge, Misfire, MIL Lamp on
Posted to GM Driveability on 11/18/2014 7 Replies

Replaced coils and plugs on customer request, still has multiple misfires on all cylinders. Seems to be more apparent when cold, still misfires but not as bad after warming up. Misfires are high on cylinder 4 with cylinders 1 and 5 not as high, misfires on 2 a...

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  Related Documents & Media  2006 Hummer H3

 
Message Closed w/FIX

car Vehicle Data

2006 Hummer H3

VIN 5GTDN13696
Engine3.5 L / 5 cyl / GAS
Trans4-speed Automatic (Electronic)
DeliveryFuel Injection / misfire
EmissionsOBD-II Compliant
SymptomsSurge, Misfire, MIL Lamp On
OccursMore Apprent When Cold

Trouble Codes

P0300Multiple Misfire Detected
Message Closed w/FIX

car Vehicle Data

2006 Hummer H3

VIN 5GTDN13696
Engine3.5 L / 5 cyl / GAS
Trans4-speed Automatic (Electronic)
DeliveryFuel Injection / misfire
EmissionsOBD-II Compliant
SymptomsSurge, Misfire, MIL Lamp On
OccursMore Apprent When Cold

Trouble Codes

P0300Multiple Misfire Detected