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Home >> GMC >> 2000 >> C3500 HD 6.5 F, Automatic >> Repair and Diagnosis (Single Page) >> Engine Performance >> Theory and Operation >> Engine Controls - Theory & Operation >> Computerized Engine Controls (Gasoline Engines) >> Powertrain Control Module & Vehicle Control Module >> Power Supply
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Power Supply

Power for PCM reference output signals (5 volts) and control devices (12 volts) is received from the battery through ignition circuit when ignition switch is in the ON position. Keep-alive memory power is received directly from the battery.

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