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Home >> Chevrolet >> 2009 >> Chevy Express G3500, Van Cargo Extended, 6.6 6 >> Repair and Diagnosis >> Engine Performance >> System >> Engine Control System & Fuel System - 6.6L LMM - Introduction >> Description and Operation >> Engine Idle Control System Description >> High Idle Switch
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High Idle Switch

The high idle switch will slowly increase engine RPM to the calibrated high idle speed when depressed. The high idle speed can be programmed by using a scan tool. Refer to High Idle Switch Programming . If the High Idle Switch is not operating as desired, refer to High Idle Switch Diagnosis .

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