Question about 1997 Chevrolet Blazer

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Pcm not ready to test 1997 chevy blazer

Failed emissions

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  • dmumper829 Sep 30, 2008

    Have driven 1997 blazer about 500 miles. I think that should be enough,or not?? Battery has gone dead 500 miles ago.Load tested battery, checks out OK. I have also checked fuses and hot all the time wire to computer, The code that comes up is not ready to test.

  • dmumper829 Oct 01, 2008

    Thanks for the GM driving cycle info.I will try to run thru the driving cycle 5 times min over the next few weeks befor checking system .

  • dmumper829 Oct 24, 2008

    Ran thru driving cycle since last e-mail sept. 30. Not a single monitor ready to check.Do I need to replace computer on my 97 blazer

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What DTC, and what monitors didn't pass? Drive cycling untill they clear or the code comes up is the only answer. Have you had a CEL or ran the battery dead lately?

Posted on Sep 29, 2008

  • mcalkins3
    mcalkins3 Sep 30, 2008

    As said you need to confirm that all monitors are ready for inspection.Even though you gave me a horrible rating without farther help, here is a site for the GM drive cylce. Mileage isn't the best way to ensure a OBDII car is ready for inspection. Certain Criteria needs to be met. http://www.obdii.com/drivecycle.html

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