• 2004 GM PCM Engine Control Module 12586243, front view showing the main electrical connectors.
  • 2011 Sierra 3500 ECM Engine Computer, part number 12642100, showing the main housing and three 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, part number 12642100, shown on a white background.
  • Front view of the 2004 Trailblazer EXT PCM Engine Control Module 12586243, showing the main electrical connectors.
  • 2011 Sierra and Silverado 6.0L Engine Computer ECM part number 12642100.
  • 2004 Envoy XL PCM Powertrain Control Module 12586243, front view showing connectors.
  • Programmed Engine Control Module ECM 12642100 for 2011 GMC Sierra and Chevrolet Silverado 2500/3500 with 6.0L engine.
  • 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 number 12642100, showing the main housing and electrical connection ports.
  • 2005 Pontiac Pursuit PCM Engine Computer Module 12615197, front view showing connectors.
  • 2011 Cruze Engine Computer ECM module part number 12616532.
  • Front view of a 2004 Blazer S10 PCM Engine Control Module with part number 12586243, showing the main electrical connector ports.
  • Programmed 2011 Sierra 3500 Engine Computer ECM 12616532 with connectors visible.
  • Programmed 2004 Avalanche 2500 ECM PCM Engine Computer 12586243, front view showing connectors.
  • 2011 Sierra 2500 ECM Engine Control Module, part number 12616532, showing the main electrical connectors.
  • 2005 Cobalt PCM Engine Control Module, part number 12589320, shown on a white background with connectors visible.

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