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Home >> Pontiac >> 2003 >> Grand Prix GTP >> Repair and Diagnosis >> External Pages >> Different variant/trim >> Section 5 (Engine Controls - Theory & Operation) >> Fuel Systems >> Fuel Control >> Notes

Fuel Control: Notes

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The Powertrain Control Module (PCM) monitors voltages from several sensors in order 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.