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2003 Chevrolet Express 3500 6.0L Misfire, MIL Lamp on
Posted to GM Driveability on 7/28/2009 14 Replies

Hi Chevy Guys got this G3500 it has a big heavy box on it and im sure its overweight. it throws PO171 & PO174 both banks lean and it misfires alot. it has new mass air sensor plugs wires exhaust manifolds and we put 2 front o2s on it 3 weeks ago... and the bac...

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car Vehicle Data

2003 Chevrolet Express 3500

VIN 1GBJG31413
Engine6.0 L / 8 cyl / GAS
Trans4-speed Automatic (Electronic)
DeliveryFI / injectors
EmissionsOBD-II Compliant
SymptomsMisfire, MIL Lamp On
Misc.Big Heavy Van
Message Closed w/FIX

car Vehicle Data

2003 Chevrolet Express 3500

VIN 1GBJG31413
Engine6.0 L / 8 cyl / GAS
Trans4-speed Automatic (Electronic)
DeliveryFI / injectors
EmissionsOBD-II Compliant
SymptomsMisfire, MIL Lamp On
Misc.Big Heavy Van