• Front view of the 2003 Astro Powertrain Control Module 12578127, showing the main electrical connector ports.
  • 2004 Corvette PCM Powertrain Control Module 12578127 with connectors visible.
  • Front view of the 2004 CTS Powertrain Control Module PCM 12578127, showing the main electrical connector ports.
  • 2003 Blazer S10 Jimmy S15 Powertrain Control Module PCM 12578127, front view showing the three main electrical connectors.
  • 2003 Avalanche 2500 PCM Powertrain Control Module 12578127, front view showing the main electrical connectors.
  • 2003 Silverado Powertrain Module PCM 12578127 with its two main electrical connectors visible.
  • Programmed 2003 Silverado 2500 PCM Powertrain Control Module 12578127, front view showing connectors.
  • 2003 Silverado 3500 PCM Powertrain Control Module, part number 12578127, showing the main connectors.
  • 2003 Sierra 2500 PCM Powertrain Control Module, part number 12578127, ready for installation.
  • Programmed 2003 GMC Sierra 3500 PCM Powertrain Control Module 12578127, front view showing connectors.
  • Front view of the 2003 Express 3500 PCM Powertrain Control Module 12578127, showing the main electrical connector ports.
  • 2003 Express 1500 PCM Powertrain Control Module 12578127, front view showing connectors.
  • Front view of a 2003 Express 2500 PCM part number 12578127 showing the electrical connector ports.
  • 2003 GMC Yukon XL 2500 Powertrain Control Module (PCM) 12576869, front view showing connectors.
  • Programmed 2003 Suburban 2500 PCM Powertrain Control Module, part number 12576869, ready for installation.
  • Programmed 2003 GMC Sierra 1500 PCM Powertrain Control Module 12576869, front view showing connectors.
  • Front view of a 2003 Savana 1500 PCM Powertrain Control Module with part number 12576869.
  • 2003 GMC Savana 2500 Van Powertrain Control Module PCM 12576869, front view showing connectors.
  • Front view of the 2003 Savana 3500 PCM showing the main electrical connector ports.
  • A 2003 GMC Safari PCM Powertrain Control Module with part number 12576869, showing the metal casing and electrical connector ports.

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