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2003 Chevrolet Express 3500 6.0L MIL Lamp on
Posted to GM Driveability on 6/26/2012 10 Replies

This high mileage van has a P0300 and shows consistent misfires on cylinders 5 and 8 when accelerating down the road or in neutral, though no misfire is felt or actually occuring. We cannot complete a crankshaft variation relearn procedure, which is our main c...

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  Related Documents & Media  2003 Chevrolet Express 3500

 
Message Closed w/FIX

car Vehicle Data

2003 Chevrolet Express 3500

VIN 1GBHG31U93
Engine6.0 L / 8 cyl / GAS
Trans4-speed Automatic (Electronic)
DeliveryFuel Injection
EmissionsOBD-II Compliant
SymptomsMIL Lamp On
OccursOn Accel, RPM Above 1000
Misc.Cutaway Van

Trouble Codes

P0300Multiple Misfire Detected
Message Closed w/FIX

car Vehicle Data

2003 Chevrolet Express 3500

VIN 1GBHG31U93
Engine6.0 L / 8 cyl / GAS
Trans4-speed Automatic (Electronic)
DeliveryFuel Injection
EmissionsOBD-II Compliant
SymptomsMIL Lamp On
OccursOn Accel, RPM Above 1000
Misc.Cutaway Van

Trouble Codes

P0300Multiple Misfire Detected