• GM PCM 12586243 Engine Control Module for 2004 GM vehicles, front view showing the three main electrical connector ports.
  • 2011 Sierra 2500 ECM Engine Control Module 12656958 with connectors visible.
  • Front view of the 2004 GMC Savana 3500 PCM Engine Control Module 12586243, showing the main housing and electrical connectors.
  • 2011 Silverado Engine Computer ECM part number 12656958, front view showing the three main electrical connectors.
  • Front view of the 2004 GMC Safari PCM Engine Computer with part number 12586243, showing the main electrical connectors.
  • 2011 Silverado ECM Engine Control Module 12656958, front view showing the main electrical connectors.
  • Programmed 2011 Chevy Cruze ECM Engine Computer Module 12642100, front view with connectors.
  • 2004 GM PCM Engine Control Module 12586243, front view showing the main electrical connectors.
  • Front view of the 2011 Sierra 3500 ECM Engine Computer Module, part number 12642100, showing the main electrical connector ports.
  • 2004 Chevy Astro PCM Engine Control Module 12586243, front view showing the main electrical connectors.
  • 2011 Sierra 2500 ECM Engine Control Module 12642100 for 6.0L engines.
  • Front view of the 2004 Trailblazer EXT PCM Engine Control Module 12586243, showing the main electrical connectors.
  • 2011 Sierra Engine Computer ECM part number 12642100, front view showing the three main electrical connectors.
  • 2004 Envoy XL PCM Powertrain Control Module 12586243, front view showing connectors.
  • Front view of a 2011 Sierra 2500 ECM Engine Computer, part number 12642100, showing the main electrical connection ports.
  • 2004 Envoy XUV PCM Powertrain Control Module 12586243 with its main electrical connectors visible.
  • 2011 Silverado 3500 ECM Engine Computer part number 12642100, front view showing the main electrical connectors.
  • Front view of a 2004 Corvette ECM Engine Control Module, part number 12586243, showing the main electrical connector ports.
  • 2005 Cobalt PCM Powertrain Control Module 12615197 with its main electrical connectors visible.
  • 2011 Silverado 2500 ECM Engine Control Module part 12642100 showing the main connectors.

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