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Old 07-05-2017, 09:56 PM   #6
sntrym95
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Join Date: Jan 2006
Location: Big Pine Key, FL
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Re: ANOTHER "my '96 GMC idles high" thread...

Check the mass air flow sensor, MAP sensor, and anything else electrical. It might help to get a computer hooked up the diagnostic port to see if any sensor is reporting the wrong info to the PCM. If everything looks good, then it could be the PCM.
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