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Home >> Saturn >> 2005 >> L300 >> Repair and Diagnosis >> Engine Performance >> System >> Engine Controls - Introduction >> Description and Operation >> Throttle Actuator Control (TAC) System Description >> Engine Control Module

Engine Control Module

The TAC module in this system is integrated into the ECM. The TAC achieves throttle positioning by providing a pulse width modulated voltage to the TAC motor after determining the drivers intent and then calculating the appropriate throttle response. The TAC module is not serviced and is to be replaced with the ECM.