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Re: 2002 chev 1 ton van 8.1L
Posted to Technical Discussion Forum on 12/7/2012 1 Reply

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TAC system=throttle actuator control system, includes Accelerator Pedal Position sensor (APP), Throttle Body (TB with TP1 and TP2), TAC module. TAC module=brain that talks to APP, TB, and PCM. Newer ... Login to read more.

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