Grand Prix V6-3.8L VIN 2 (2004)
Electronic Throttle Control Module: Description and Operation
THROTTLE ACTUATOR CONTROL MODULE
The TAC module is the control center for the TAC system. The TAC system uses Electronically Erasable Programmable Read Only Memory and is
self-diagnosing. The TAC module 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 motor as directed by the PCM. The TAC module is not serviced and just be
replaced with the throttle body assembly.
