• Front view of the 2004 Silverado 2500 PCM with service number 12586242, showing the main electrical connectors.
  • Front view of the 2004 Silverado 2500 PCM 12586242 with its three main electrical connectors visible.
  • Programmed 12586242 PCM for a 2004 Chevrolet Silverado 2500, showing the main electrical connectors and service number label.
  • Front view of a programmed 2004 Silverado 2500 PCM 12586242 with connectors visible.
  • Pre-programmed 2004 Silverado 2500 PCM Engine Computer module, part number 12586242, ready for installation.
  • A replacement 2004 Silverado 1500 PCM, part number 12586242, ready for programming and installation.
  • Programmed 2004 Silverado 1500 PCM with service number 12586242, ready for installation.
  • Front view of a programmed 2004 Silverado 1500 PCM with part number 12586242 visible on the label.
  • Programmed 2004 Silverado 1500 PCM, service number 12586242, ready for installation.
  • Programmed 2004 Silverado 1500 PCM with service number 12586242 shown on a white background.
  • Programmed 2004 Silverado 1500 PCM with part number 12586242, ready for installation.
  • A close-up of the 2004 Silverado 1500 PCM 12586242, showing the connectors and service label.
  • 2004 Silverado 1500 PCM with service number 12586242, showing connectors.
  • Programmed 2004 Silverado 1500 Engine Computer 12586242, showing the main connectors and service number label.
  • Programmed 2004 Silverado 1500 PCM Engine Computer 12586242 ready for installation.
  • Programmed 2004 Silverado 1500 PCM Engine Computer with service number 12586242 shown on a white background.
  • Programmed 2004 Silverado 1500 ECM, part number 12586242, ready for installation.
  • Programmed 2004 Cadillac Seville PCM, part number 12587465, ready for installation.
  • A close-up of the 2004 Cadillac Seville PCM, part number 12587465, showing the main connectors.
  • Front view of the 2004 Cadillac Seville PCM, part number 12587465, showing the main connectors.

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