Question about Pontiac Grand Prix

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My 1999 GTP wont lock up the converter

My 1999 GTP will lose the ability to lock the converter when the tranny reaches 82 degrees. I am getting the code stating that the input speed sensor is not reading any RPM. I have replaced this sensor in the tranny and it made no difference.

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Change the transmtion oil.

Posted on Jul 24, 2009

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