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Segment Description

  • Programmable Read Only Memory chips that were used on pre-OBDII (pre 1996) GM Engine and Powertrain Controllers
  • Contained all the operating software for a specific vehicle
  • Physically removable
  • Updates available if there were any software running changes or software “fixes” available
  • Currently addressed in modern reprogrammable controllers by flash programming

Segment Details

  • Date June 27, 2014
  • Tags PROM

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