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2003 GMC Yukon XL 1500 SLE 5.3L Misfire, MIL Lamp on
Posted to GM Driveability on 10/5/2009 16 Replies

This one is probably very easy for you GM [...] the right bank cylinders are miss firing .I found TSB 3056 in my ALLDATA , I swapped the O2 sensors position 1 it did not move the miss .The sparkplugs are black (like fuel enrichment problem). I have very good h...

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  Related Documents & Media  2003 GMC Yukon XL 1500 SLE

 
Message Closed w/FIX

car Vehicle Data

2003 GMC Yukon XL 1500 SLE

VIN 3GKEC16Z73
Engine5.3 L / 8 cyl / GAS
Trans4-speed Automatic (Electronic)
DeliveryFI
EmissionsOBD-II Compliant
SymptomsMisfire, MIL Lamp On
OccursAlways

Trouble Codes

P0300Multiple Misfire Detected
Message Closed w/FIX

car Vehicle Data

2003 GMC Yukon XL 1500 SLE

VIN 3GKEC16Z73
Engine5.3 L / 8 cyl / GAS
Trans4-speed Automatic (Electronic)
DeliveryFI
EmissionsOBD-II Compliant
SymptomsMisfire, MIL Lamp On
OccursAlways

Trouble Codes

P0300Multiple Misfire Detected