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Old 06-19-2013, 11:42 AM   #8
jrh@lpe
 
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Join Date: Aug 2010
Location: Decatur
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MAF sensor

The L83 engine runs an eight wire mass airflow (MAF) sensor. Gen IV engines had a five wire sensor with two wires are for the intake air temperature and 3 wires are for the mass airflow. The added three wires are for a humidity sensor.

Here is an image of that sensor in the Silverado duct work (passenger side):

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