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Home >> Pontiac >> 2004 >> GTO V8-5.7L VIN G >> Repair and Diagnosis >> Relays and Modules >> Relays and Modules - Powertrain Management >> Relays and Modules - Computers and Control Systems >> Engine Control Module >> Description and Operation >> Powertrain Control Module (PCM) >> PCM Function
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PCM Function


PCM Function

The PCM supplies a buffered voltage to various sensors and switches. The PCM controls most components with electronic switches which complete a ground circuit when the switches are turned ON.


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