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GMC
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2003
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Jimmy 4D Utility, AWD
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Repair and Diagnosis
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Specifications
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Engine Controls - Service & Adjustment Specifications - 4.3L
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Fuel Systems
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Idle Speed & Mixture
Idle Speed & Mixture
NOTE:
Idle mixture is controlled by Powertrain Control Module (PCM). Idle speed is preset by manufacturer and is not adjustable.