• Programmed 2003-2005 Chevrolet Trailblazer PCM Engine Computer with connectors visible.
  • Programmed 2004 Sierra 1500 PCM with service number 12586242 shown on a white background.
  • A side view of the 2004 Sierra 1500 PCM with service number 12586242, showing the connectors.
  • Pre-programmed 2004 Sierra 1500 PCM with service number 12586242, showing connectors.
  • Programmed 2004 Sierra 1500 PCM with service number 12586242, ready for installation.
  • A programmed 2004 GM PCM 12586242 for Sierra, Silverado, and other GM trucks, ready for installation.
  • Programmed 2004 Sierra 1500 PCM Engine Computer Module, part number 12586242.
  • 2004 Sierra 1500 PCM Engine Computer ECM ECU 12586242
  • Programmed 2004 GMC Sierra 1500 PCM replacement module, part number 12586242, ready for installation.
  • Programmed 2004 GMC Sierra 1500 engine computer module, part number 12586242.
  • Engine Control Module (PCM) for 2004 GMC Sierra 1500, part number 12586242, with connectors visible.
  • A 2004 GM 12586242 PCM with connectors visible, ready for VIN programming and installation.
  • Programmed 2004 Sierra 1500 PCM 12586242, showing the main connectors and service number label.
  • Front view of the 2004 Avalanche 1500 ECM 12586242, showing the main electrical connectors.
  • Programmed 2004 Avalanche 1500 ECM, part number 12586242, ready for installation.
  • Side view of the 2004 Avalanche 1500 engine computer, service number 12586242, showing the main electrical connectors.
  • Programmed 2004 Chevrolet Avalanche 1500 ECM Engine Computer with service number 12586242.
  • Programmed 12586242 PCM for 2004 Chevrolet Silverado and other GM vehicles, front view.
  • Programmed 2004 Chevy Avalanche 1500 Engine Computer Module PCM 12586242.
  • Programmed 2004 Avalanche 1500 PCM, part number 12586242, ready for installation.

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