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GMC
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1992
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Forward Control 4.3 Z, Automatic
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Repair and Diagnosis
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Engine Performance
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System
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Engine Controls - System/Component Tests
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Idle Air Control - Vehicles Without 4L80-E Transmission
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Idle Air Control System Check Chart
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Notes
Idle Air Control System Check Chart: Notes
NOTE:
If a repair has been made refer to IAC RESET PROCEDURE before retesting.
Fig 1: Idle Air Control System Check Chart