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Home >> Pontiac >> 2000 >> Firebird V8-5.7L VIN G >> Repair and Diagnosis >> Powertrain Management >> Computers and Control Systems >> Description and Operation >> System Operation >> Powertrain Control Module >> PCM Function
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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 turned ON.
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