• Engine Control Module (ECM) for a 2011 Sierra 2500, part number 12616532, ready for installation.
  • Programmed 2011 Sierra 3500 6.0L ECM 12616532 with connectors visible, ready for installation.
  • Front view of the programmed 2011 Sierra 2500 ECM 12616532, showing the main connectors.
  • Front view of the 2011 Silverado 3500 ECM with part number 12616532, showing the main connectors.

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