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Home >> Pontiac >> 2004 >> GTO Automatic >> Repair and Diagnosis >> Engine Performance >> System >> Engine Controls -- 5.7L -- (Introduction) >> Description and Operation >> Fuel System Description >> Modes of Operation
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Modes of Operation

The PCM looks at voltages from several sensors to determine how much fuel to give the engine. The fuel is delivered under one of several conditions called modes. The PCM controls all modes.

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