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Home >> GMC >> 2004 >> Yukon/Denali 4WD V8-5.3L VIN T >> Repair and Diagnosis >> Powertrain Management >> Computers and Control Systems >> Engine Control Module >> Description and Operation >> Throttle Actuator Control (Tac) System
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Throttle Actuator Control (Tac) System

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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