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2007 GMC Envoy SLE 4.2L Excessive Emissions, Poor Idle Quality, Misfire, MIL Lamp on
Posted to GM Driveability on 9/12/2014 11 Replies

Yesterday scanned, had a p0300 looked at misfire data using otc geneysis evo. Cyl. 4 & 5. Pulled both coils to watch spark #5 appeared weak yellow arc. When i replaced plugs all appeared darker than normal and #5 was fouled. The plugs were not that old gap was...

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  Related Documents & Media  2007 GMC Envoy SLE

 
Message Closed w/FIX

car Vehicle Data

2007 GMC Envoy SLE

VIN 1GKDS13S27
Engine4.2 L / 6 cyl / GAS
Trans4-speed Automatic (Electronic)
DeliveryFuel Injection
EmissionsOBD-II Compliant
SymptomsExcessive Emissions, Poor Idle Quality, Misfire, MIL Lamp On
OccursAlways
Misc.2WD

Trouble Codes

P0300Multiple Misfire Detected
Message Closed w/FIX

car Vehicle Data

2007 GMC Envoy SLE

VIN 1GKDS13S27
Engine4.2 L / 6 cyl / GAS
Trans4-speed Automatic (Electronic)
DeliveryFuel Injection
EmissionsOBD-II Compliant
SymptomsExcessive Emissions, Poor Idle Quality, Misfire, MIL Lamp On
OccursAlways
Misc.2WD

Trouble Codes

P0300Multiple Misfire Detected