Question about 1999 Chevrolet Tahoe

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Service engine soon light

A diagnostic check said heat sensor problem. changed it but still have check eng. light. is there another heat sensor and where is it located?

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Heat sensor or heated O2 sensor? These are 2 different things. After replacing the sensor the first time, did you remove the negative battery cable for at least 30 seconds? This will re-set the ECM.

Posted on Jun 12, 2008

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