• Programmed 89017739 PCM for 2004 GM vehicles, showing the main connectors and identification label.
  • Programmed 2004 Avalanche 2500 PCM with connectors visible, ready for installation.
  • Front view of a programmed 89017739 PCM for 2004 GM vehicles, showing the main electrical connectors.
  • Front view of a Programmed 2004 GM PCM 89017739 with its three main electrical connectors visible.
  • Front view of a programmed 2004 GMC Sierra 3500 PCM replacement module with connectors visible.
  • Programmed 89017739 PCM for 2004 GM vehicles like the Buick Rainier, showing the main computer unit and connection ports.
  • Programmed 89017739 Engine Control Module for a 2004 Chevy Express 1500, showing the main connectors.
  • Programmed 2004 Yukon XL 2500 PCM Engine Control Module, part number 12586243, ready for installation.
  • Programmed 12586243 PCM for 2004 GM vehicles, showing the main connectors and part number label.
  • Programmed 2011 Sierra 3500 ECM, part number 12656958, ready for installation.
  • Programmed 2004 Chevrolet SSR ECM, part number 12586243, ready for installation.
  • Programmed 12656958 Engine Computer for a 2011 GMC Sierra 2500 with 6.0L engine.
  • Front view of a 2004 Savana 2500 Programmed PCM, part number 12586243, ready for installation.
  • Programmed 12656958 Engine Control Module for a 2011 Sierra 3500 6.0L, showing the main connectors.
  • A programmed 2004 GMC Savana 1500 PCM, part number 12586243, ready for installation.
  • Programmed 2011 Sierra 2500 ECM, part number 12656958, ready for installation on a workbench.
  • Programmed 2004 GMC Savana 3500 PCM, part number 12586243, ready for installation.
  • Pre-programmed 2011 Silverado 3500 ECM, part number 12656958, ready for installation.
  • A professionally programmed 12586243 PCM for 2004 GM vehicles, shown on a clean white background.
  • Pre-programmed 2011 Silverado 2500 ECM with part number 12656958, ready for installation.

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