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Home >> Pontiac >> 2004 >> Aztek Base, AWD >> Repair and Diagnosis >> External Pages >> Different car >> Section 120 (Engine Control System - 4.8L, 5.3L, & 6.0L - Introduction) >> Description and Operation >> Throttle Actuator Control (TAC) System Description >> Throttle Actuator Control Module

Throttle Actuator Control Module

WARNING: This page is about a different car, the 2004 GMC Envoy XUV, 2004 GMC Envoy XL, 2004 Chevrolet TrailBlazer, and 2004 Buick Rainier. However, it is still accessible from the selected car via links, so may be relevant.

The TAC module is the control center for the throttle actuator control system. The TAC system is self-diagnosing and provides diagnostic information to the PCM through a dedicated serial data line. The TAC achieves throttle positioning by providing a pulse width modulated voltage to the TAC as directed by the PCM.

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