• Chevrolet 2004 Trailblazer Ext Engine Control Module 89017738 Programmed To Your VIN
  • Pre-programmed 2004 Trailblazer EXT PCM, part number 12586242, ready for installation to fix engine issues.
  • A pre-programmed 12586242 PCM for a 2004 Escalade ESV, showing the three main electrical connectors.
  • Programmed 2004 Escalade ESV PCM with service number 12586242, showing the main connectors for installation.
  • A pre-programmed 2004 Sierra Denali PCM, part number 12586242, shown on a clean white background, ready for installation.
  • Programmed 2004 Sierra Denali PCM with service number 12586242, shown from the front with connectors visible.
  • A technician holding a pre-programmed 2004 Sierra Denali PCM, ready for installation.
  • 2004 Sierra 3500 Engine Control Module 12586242 Programmed To Your VIN
  • A 2004 GM Programmed ECM with service number 12586242, ready for installation in a compatible GM truck or SUV.
  • A programmed 2004 Sierra 3500 PCM, part number 12586242, ready for installation.
  • Pre-programmed 12586242 Powertrain Control Module (PCM) for a 2004 GMC Sierra 3500, showing the main housing and electrical connector ports.
  • A programmed 2004 Sierra 3500 PCM, part number 12586242, ready for installation.
  • Pre-programmed 2004 Sierra 3500 PCM with service number 12586242, showing the main electrical connectors.
  • A 2004 Sierra 3500 PCM with service number 12586242, pre-programmed and ready for installation.
  • Pre-programmed 2004 Sierra 2500 PCM, part number 12586242, ready for installation on a workbench.
  • Programmed 2004 GM PCM engine computer, service number 12586242, ready for installation in a GMC Sierra or Chevrolet Silverado.
  • 2004 Silverado 3500 PCM with service number 12586242, ready for installation.
  • A front-facing view of the pre-programmed 2004 Rainier PCM, part number 12586242, showing the main electrical connectors.
  • A 2004 Rainier PCM, part number 12586242, ready for programming and installation.
  • A 2004 GM PCM with part number 12586242, showing the main electrical connectors for installation.

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