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Home >> Cadillac >> 2004 >> CTS Base, 3.2 N >> Repair and Diagnosis >> Engine Performance >> System >> Engine Controls - 2.6L & 3.2L - Introduction >> Description and Operation >> Throttle Actuator Control (TAC) System Description >> Electronic Control Module (ECM)
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Electronic Control Module (ECM)

The TAC module is the control center for the electronic throttle system. The TAC module is located within the ECM and is not serviceable separately. The ECM monitors the commanded throttle position and compares it to the actual throttle position. This is accomplished by monitoring the APP, TP, and other various sensors.