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2002 Chevrolet Blazer LS 4.3L Misfire, MIL Lamp on
Posted to GM Driveability on 10/27/2011 11 Replies

Hey Fellow Techs. This blazer will set P0300 every road test. Class A Miss Fire so Check engine light is flashing during cruise. Vehicle runs great do not feel any misfire during cruise. Counters on scanner say #4 and #1 the worse. Replaced plugs,cap,rotor,wir...

11 Replies Received (View Replies)

  Related Documents & Media  2002 Chevrolet Blazer LS

 
Message Closed w/Summary

car Vehicle Data

2002 Chevrolet Blazer LS

VIN 1GNCT18W52
Engine4.3 L / 6 cyl / GAS
Trans4-speed Automatic (Electronic)
DeliveryFuel Injection / CONVERTED TO MFI
EmissionsOBD-II Compliant
SymptomsMisfire, MIL Lamp On
OccursCruise, Idle

Trouble Codes

P0300Multiple Misfire Detected
Message Closed w/Summary

car Vehicle Data

2002 Chevrolet Blazer LS

VIN 1GNCT18W52
Engine4.3 L / 6 cyl / GAS
Trans4-speed Automatic (Electronic)
DeliveryFuel Injection / CONVERTED TO MFI
EmissionsOBD-II Compliant
SymptomsMisfire, MIL Lamp On
OccursCruise, Idle

Trouble Codes

P0300Multiple Misfire Detected