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Yukon V8-350 5.7L
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Relays and Modules - Computers and Control Systems
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Idle/Throttle Speed Control Unit
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Adjustments
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Idle/Throttle Speed Control Unit: Adjustments
Base Idle Speed is not adjustable on this engine and is controlled by the control module.
Refer to FUEL SUPPLY AND AIR INDUCTION/ADJUSTMENT PROCEDURES for adjusting Controlled Idle Speed.