my service engin light keeps throughn codes

Asked by Jan 22, 2014 at 12:44 PM about the 2003 Chevrolet Blazer LS 4-Door 4WD

Question type: Maintenance & Repair

will be driven an the light will start flashen

1 Answer

72,345

A flashing service engine soon light is warning you that the engine is misfiring and the catalytic converter is being damaged. Have the computer scanned at your local Advance or Autozone. They'll do it for free. A trouble code P0300 is random/ multi cylinder misfiring, P0301 is cylinder #1 is misfiring, P0302, is cylinder #2 is misfiring, etc. Are you due for a tune-up? If so, try that first. HTH. -Jim

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