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'16 Equinox LTZ AWD 3.6
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Biggest issues with complete data is determining the normal operating ranges of that data.
That's where a shop manual comes into play as it will list some normal ranges.
An example is STFT. Normal range is -3 to +3 short term fuel trims. The closest to zero the better when diagnosing front O2 sensor operation and fueling control checked at idle.
 
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