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2003 Chevrolet EXPRESS 6.0L Poor Idle Quality, Misfire, MIL Lamp on
Posted to GM Driveability on 5/17/2004 10 Replies

Van came in with mil on , cylinders 4 & 6 were dead, we replaced all the spark plugs & wires & coils for cylinders 4 & 6. Customer returned next day with missfire again. All cylinders on right of engine 2,4,6,8 all showing missfires on scanner. We replaced all...

10 Replies Received (View Replies)

 
Message Closed w/FIX

car Vehicle Data

2003 Chevrolet EXPRESS

VIN 1GBJG31083
Engine6.0 L / 8 cyl
DeliveryFI / EFI
EmissionsOBD-II Compliant
SymptomsPoor Idle Quality, Misfire, MIL Lamp On
OccursAlways

Trouble Codes

P0300Multiple Misfire Detected
Message Closed w/FIX

car Vehicle Data

2003 Chevrolet EXPRESS

VIN 1GBJG31083
Engine6.0 L / 8 cyl
DeliveryFI / EFI
EmissionsOBD-II Compliant
SymptomsPoor Idle Quality, Misfire, MIL Lamp On
OccursAlways

Trouble Codes

P0300Multiple Misfire Detected