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2013 GMC Terrain Denali 3.6L Poor Idle Quality, Poor Idle Quality, Poor Idle Quality, Poor Idle Quality, Poor Idle Quality, Poor Idle Quality
Posted to GM Driveability on 2/21/2020 9 Replies

dtc is p0300. data shows miss on #5, sometimes accompanied with #6. its a large miss, not a fish bite. new coils and plugs have been moved around. compression is 150 psi on all cylinders. leakdown is good on all cylinders. valves were carboned up, but clea...

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  Related Documents & Media  2013 GMC Terrain Denali

 
Message Closed w/FIX

car Vehicle Data

2013 GMC Terrain Denali

VIN [No VIN Available]
Engine3.6 L / 6 cyl / FLEX
Trans6-speed Automatic (Electronic)
DeliveryFuel Injection
EmissionsOBD-II Compliant
SymptomsPoor Idle Quality, Poor Idle Quality, Poor Idle Quality, Poor Idle Quality, Poor Idle Quality, Poor Idle Quality
OccursAlways

Trouble Codes

P0300Multiple Misfire Detected
Message Closed w/FIX

car Vehicle Data

2013 GMC Terrain Denali

VIN [No VIN Available]
Engine3.6 L / 6 cyl / FLEX
Trans6-speed Automatic (Electronic)
DeliveryFuel Injection
EmissionsOBD-II Compliant
SymptomsPoor Idle Quality, Poor Idle Quality, Poor Idle Quality, Poor Idle Quality, Poor Idle Quality, Poor Idle Quality
OccursAlways

Trouble Codes

P0300Multiple Misfire Detected