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Home >> GMC >> 2005 >> Savana Special 6.0 U >> Repair and Diagnosis >> Engine Performance >> System >> Engine Control System - 4.8L, 5.3L, And 6.0L - Introduction >> Description and Operation >> Throttle Actuator Control (TAC) System Description >> Powertrain Control Module
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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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