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

Powertrain Control Module

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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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