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2003 Chevrolet Express 3500 6.0L Misfire, Poor Fuel Economy, MIL Lamp on
Posted to GM Driveability on 8/5/2009 3 Replies

( NATURAL GAS VEHICLE ) Had a customer tow this vehicle from another shop. The other shop had a multiple misfire problem and had done a tuneup. They had replaced the spark plugs, wires, injectors, coils and fuel rail and they were unsuccessful and ran out of i...

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  Related Documents & Media  2003 Chevrolet Express 3500

 
Message Closed w/FIX

car Vehicle Data

2003 Chevrolet Express 3500

VIN 1GCHG35U23
Engine6.0 L / 8 cyl / GAS
Trans4-speed Automatic (Electronic)
DeliveryFI
EmissionsOBD-II Compliant
SymptomsMisfire, Poor Fuel Economy, MIL Lamp On
OccursAlways
Misc.Natural Gas

Trouble Codes

P0300Multiple Misfire Detected
P1020Camshaft Phasing System Malfunction
Message Closed w/FIX

car Vehicle Data

2003 Chevrolet Express 3500

VIN 1GCHG35U23
Engine6.0 L / 8 cyl / GAS
Trans4-speed Automatic (Electronic)
DeliveryFI
EmissionsOBD-II Compliant
SymptomsMisfire, Poor Fuel Economy, MIL Lamp On
OccursAlways
Misc.Natural Gas

Trouble Codes

P0300Multiple Misfire Detected
P1020Camshaft Phasing System Malfunction