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Home >> GMC >> 2003 >> Safari Van Cargo, AWD >> Repair and Diagnosis >> Engine Performance >> Engine Controls - On-Vehicle Adjustments - Trucks (Except Tracker) >> Idle Speed & Mixture >> Diesel Engines

Diesel Engines

NOTE: Diesel engines are equipped with electronic fuel injection in which PCM controls all fuel delivery modes based on inputs from APP, ECT and BARO sensors. Idle speed is not adjustable.