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Home >> Chevrolet >> 1993 >> APV >> Repair and Diagnosis (Single Page) >> Engine Performance >> Theory and Operation >> Engine Controls - Theory & Operation >> Computerized Engine Controls (Gasoline) >> Electronic Control Module (ECM) >> Read Only Memory (ROM)

Read Only Memory (ROM)

ROM is programmed information which only ECM can read. The ROM program cannot be changed. If battery voltage is removed, ROM information is retained.

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