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Home >> Cadillac >> 2003 >> Escalade EXT >> Repair and Diagnosis >> External Pages >> Different car >> Section 644 (Engine Controls - 2.6L & 3.2L - Introduction) >> Description and Operation >> Throttle Actuator Control (TAC) System Description >> Electronic Control Module (ECM)

Electronic Control Module (ECM)

WARNING: This page is about a different car, the 2004 Cadillac CTS. However, it is still accessible from the selected car via links, so may be relevant.

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.

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