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International Automotive Technicians Network
2003 Chevrolet Express 3500 6.0L Poor Idle Quality, Misfire
Posted to GM Driveability on 6/24/2008 13 Replies

van will intermittently sart running poorly. missfire counters show 2,4,6,8 all miss fire. problem will come and go. looked at injetor amp ramp and no problems there. also amp ramped coils still no problems found.

13 Replies Received (View Replies)

  Related Documents & Media  2003 Chevrolet Express 3500

 
Message Closed w/Summary

car Vehicle Data

2003 Chevrolet Express 3500

VIN 1GBHG39U43
Engine6.0 L / 8 cyl / GAS
Trans4-speed Automatic (Electronic)
DeliveryFI
EmissionsOBD-II Compliant
SymptomsPoor Idle Quality, Misfire
OccursUnder Load, Idle, Intermittently

Trouble Codes

P0300Multiple Misfire Detected
Message Closed w/Summary

car Vehicle Data

2003 Chevrolet Express 3500

VIN 1GBHG39U43
Engine6.0 L / 8 cyl / GAS
Trans4-speed Automatic (Electronic)
DeliveryFI
EmissionsOBD-II Compliant
SymptomsPoor Idle Quality, Misfire
OccursUnder Load, Idle, Intermittently

Trouble Codes

P0300Multiple Misfire Detected