• Side view of the pre-programmed 2013-2016 Cadillac XTS ECM, part number 12653998, showing the main electrical connectors.
  • A programmed 12655007 ECM for GM vehicles, showing the main connectors and part number label.
  • Programmed 12644446 ECM for GM vehicles like the Cadillac XTS, showing the main computer unit and connectors.
  • Programmed 12633555 ECM for GM vehicles like Cadillac XTS and Chevy Malibu, showing the main connectors.
  • Programmed 12653998 Engine Control Module for 2013-2016 Cadillac SRX, front view showing connectors.

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