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GMC Truck
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1999
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S15/T15 Sonoma P/U 2WD V6-4.3L VIN W
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Repair and Diagnosis
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Powertrain Management
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Computers and Control Systems
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Testing and Inspection
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Scan Tool Testing and Procedures
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Scan Tool Data, Normal Values and Definitions
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Scan Tool Data Definitions - Powertrain Systems
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Desired IAC Position
Desired IAC Position
Range -
(0-255) Counts
The desired
IAC
Position indicates how much the AC valve is commanded open by the
VCM
. 0 counts would indicate a commanded fully closed valve. 255 counts would indicate a commanded fully opened valve.