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2007 GMC Yukon SLT 5.3L Misfire
Posted to GM Driveability on 1/13/2014 22 Replies

This Yukon has DTC P0300. The customer already replaced spark plugs. My Verus shows consistent misfire on #5 and #6 at idle. At 2000 RPM only #6 misfires. The vehicle is ALWAYS in open loop. Temp is reading on scan tool and gauge. I have swapped the coil, spar...

22 Replies Received (View Replies)

  Related Documents & Media  2007 GMC Yukon SLT

 
Message Closed w/FIX

car Vehicle Data

2007 GMC Yukon SLT

VIN 1GKFC13J57
Engine5.3 L / 8 cyl / GAS
Trans4-speed Automatic (Electronic)
DeliveryFuel Injection
EmissionsOBD-II Compliant
SymptomsMisfire
OccursAlways

Trouble Codes

P0300Multiple Misfire Detected
Message Closed w/FIX

car Vehicle Data

2007 GMC Yukon SLT

VIN 1GKFC13J57
Engine5.3 L / 8 cyl / GAS
Trans4-speed Automatic (Electronic)
DeliveryFuel Injection
EmissionsOBD-II Compliant
SymptomsMisfire
OccursAlways

Trouble Codes

P0300Multiple Misfire Detected