• Programmed 2004 Envoy XL ECM, part 89017739, showing the main connectors. A reliable replacement to fix engine performance issues and clear fault codes.
  • 2004 GMC Envoy XUV ECM Engine Control Module, part number 89017739, front view showing connectors.
  • Front view of the 2004 Corvette ECM Engine Control Module 89017739, showing the main electrical connectors.
  • 2004 Blazer S10 PCM Engine Control Module 89017739, front view showing the main electrical connectors.
  • Programmed 2004 Avalanche 2500 ECM Engine Computer 89017739, front view showing connectors.
  • 2004 Silverado 3500 ECM Engine Computer 89017739, front view showing the two main electrical connector ports.
  • 2004 GMC Sierra 2500 ECM Engine Control Module 89017739, front view showing the main electrical connectors.
  • 2004 GMC Sierra 3500 ECM Electronic Control Module, part number 89017739.
  • Front view of the 2004 Buick Rainier PCM Engine Computer 89017739, showing the main electrical connector ports.
  • 2004 Express Engine Computer 12586243 Programmed To Your VIN ECM PCM ECU
  • Front view of a 2004 Yukon XL 2500 PCM Engine Control Module with part number 12586243, showing the main electrical connector ports.
  • Programmed 2004 Suburban 2500 PCM Engine Computer Module 12586243
  • Programmed 2004 SSR ECM Engine Computer 12586243, front view showing the two main electrical connectors.
  • Front view of the 2004 Savana 2500 PCM Powertrain Control Module 12586243, showing the main electrical connectors and identification label.
  • GM PCM 12586243 Engine Control Module for 2004 GM vehicles, front view showing the three main electrical connector ports.
  • Front view of the 2004 GMC Savana 3500 PCM Engine Control Module 12586243, showing the main housing and electrical connectors.
  • Front view of the 2004 GMC Safari PCM Engine Computer with part number 12586243, showing the main electrical connectors.
  • 2004 GM PCM Engine Control Module 12586243, front view showing the main electrical connectors.
  • 2004 Chevy Astro PCM Engine Control Module 12586243, front view showing the main electrical connectors.
  • Front view of the 2004 Trailblazer EXT PCM Engine Control Module 12586243, showing the main electrical connectors.

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