What Does Tac Module Mean? The Throttle Actuator Control (TAC) Module is the brain behind the Electronic Throttle Control System in the GM 4.8L, 5.3L, and 6.0L engines covered by this article. The PCM determines the intention of the driver, and will then calculate the appropriate response on the throttle. Where is the TAC module? … Continue reading What Does Tac Module Mean?
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