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Home >> Chevrolet >> 1997 >> Venture LS >> Repair and Diagnosis (Single Page) >> 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 the SYSTEM/COMPONENT TESTS article.

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