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Home >> Chevrolet >> 1998 >> Venture Base, Van Cargo Extended >> Repair and Diagnosis >> Engine Performance >> Theory and Operation >> Engine Control System - Theory & Operation >> Computerized Engine Controls >> Input Devices >> Park/Neutral Position (PNP) Switch
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Park/Neutral Position (PNP) Switch

This switch is connected to transmission gear selector and signals PCM/VCM when transmission is in Park or Neutral. PCM/VCM uses this information for determining control of ignition timing, Torque Converter Clutch (TCC) and idle speed. To check function of PNP switch, perform functional check of switch. See SYSTEM/COMPONENT TESTS article.

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