Question about 2000 Chevrolet Blazer

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If I change the engine control modual on a 2000 chev blazer do I have to take the vehicle into a dealership to have it reprogramed

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  • Myke Zurn Apr 27, 2010

    I am assuming the cpu is bad, because I am not getting ground signal to the fuel injectors. Or is something else wrong

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  • Chevrolet Master
  • 14,036 Answers

YEP WHEN REPLACING PCM OR ECM.THE DEALERSHIP HAS TO REPROGRAM IT.BECAUSE THE CRANKSHAFT POSITION SENSOR HAS TO RELEARN VARIATIONS.AND THE ANTI THEFT SYSTEM PASSWORD HAS TO BE PROGRAMMED.

Posted on Apr 27, 2010

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