• Front view of the 2003 Avalanche 2500 PCM 12578127 engine control module with connectors visible.
  • Programmed 2003 Silverado 1500 PCM, part number 12578127, ready for installation.
  • Programmed 2003 Silverado 2500 PCM with VIN-specific flashing service, part number 12578127.
  • Programmed 2003 Silverado 3500 PCM with service number 12578127, showing the main connectors.
  • Programmed PCM 12578127 for 2003 GMC Sierra 2500, showing the main connectors and service number label.
  • Programmed 2003 GMC Sierra 3500 PCM with connectors visible, ready for installation.
  • A side view of the Programmed 2003 Chevy Express 3500 PCM, part number 12578127, showing the main electrical connectors.
  • Programmed 12578127 PCM for a 2003 Chevrolet Express 1500, showing the main connectors.
  • Programmed 2003 Chevy Express 2500 PCM with part number 12578127 visible on the connector.
  • Programmed Powertrain Control Module (PCM) for a 2003 GMC Yukon XL 2500, showing the main housing and connectors.
  • Programmed 2003 Suburban 2500 PCM replacement module, front view showing connectors.
  • Programmed Powertrain Control Module (PCM) for a 2003 GMC Sierra 1500, showing the main connectors.
  • Front view of the 2003 Savana 1500 PCM 12576869 showing the main connection ports.
  • A programmed 2003 Savana 2500 PCM 12576869 engine computer module ready for installation.
  • Front view of the 2003 Savana 3500 ECM 12576869 showing the main electrical connectors and identification label.
  • Programmed 2003 GMC Safari PCM with part number 12576869 shown on a white background.
  • A pre-programmed 2003 S10 PCM 12576869 engine computer module, ready for installation.
  • Programmed 2003 Chevy Astro PCM with VIN flashing service, part number 12576869.
  • Programmed 2004 Corvette PCM with service number 12576869, ready for installation.
  • Programmed 2004 Cadillac CTS PCM with GM software updates ready for installation.

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