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Home >> Chevrolet >> 2004 >> Malibu Maxx LS >> Repair and Diagnosis >> Engine Performance >> System >> Engine Control System (Introduction) - 3.5L (Lx9) >> Description and Operation >> Throttle Actuator Control (TAC) System Description >> Powertrain Control Module
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Powertrain Control Module

The PCM determines the drivers intent and then calculates the appropriate throttle response. This information is sent to the TAC module through a dedicated serial data line.