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Home >> Chevrolet >> 2003 >> SSR LS >> Repair and Diagnosis (Single Page) >> Engine Performance >> System >> Engine Control System - 5.3L - Introduction >> Description and Operation >> Throttle Actuator Control (TAC) System Description >> Powertrain Control Module

Powertrain Control Module

The powertrain control module (PCM) determines the driver's intent, then calculates the appropriate throttle response. This information is sent to the throttle actuator control (TAC) module through a dedicated serial data line.

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