gmc Workshop Repair Guides

GMC Workshop Service and Repair Manuals

Electronic Throttle Control Module|Description and Operation|Page 3698 > < Exhaust Pipe Gasket|Service and Repair|Page 3691
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Electronic Throttle Control Module: Description and Operation

THROTTLE ACTUATOR CONTROL MODULE

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.

Electronic Throttle Control Module|Description and Operation|Page 3698 > < Exhaust Pipe Gasket|Service and Repair|Page 3691