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2003 GMC Sierra 1500 5.3L Hesitation, Misfire
Posted to GM Driveability on 10/18/2007 9 Replies

this truck came in with the trouble code p0300, cylinder 2,4,6,8 all showed misfires when cold, after the truck runs alittle the miss clears up. bank 2 sensor 1 o2 senser read 1107 when first started then starts reading normal. after senor read truck runs grea...

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  Related Documents & Media  2003 GMC Sierra 1500

 
Message Closed w/FIX

car Vehicle Data

2003 GMC Sierra 1500

VIN 1GTEK14X3Z
Engine5.3 L / 8 cyl / GAS
Trans4-speed Automatic (Electronic)
DeliveryFI
EmissionsOBD-II Compliant
SymptomsHesitation, Misfire
OccursCold

Trouble Codes

P0300Multiple Misfire Detected
Message Closed w/FIX

car Vehicle Data

2003 GMC Sierra 1500

VIN 1GTEK14X3Z
Engine5.3 L / 8 cyl / GAS
Trans4-speed Automatic (Electronic)
DeliveryFI
EmissionsOBD-II Compliant
SymptomsHesitation, Misfire
OccursCold

Trouble Codes

P0300Multiple Misfire Detected