• 2016 GM 2500 3500 6.6L Engine Computer Programmed To Your VIN ECM PCM ECU
  • Programmed 2016 GM 6.6L ECM 12662677 for Silverado and Sierra work trucks.
  • Front view of the 2016 GM 6.6L Duramax ECM 12662677, showing the main electrical connectors.
  • Front view of the 2016 Duramax ECM 12662677, showing the main electrical connectors and identification label for GM 6.6L diesel trucks.
  • Front view of the 2016 Sierra 3500 ECM 12662677 for 6.6L Duramax engines, showing connectors and part number label.
  • Front view of a used OEM 2016 Duramax ECM 12662677 showing the main connectors and service number label for GM trucks.
  • Programmed 2016 GM 6.6L Duramax ECM 12662677 for Sierra, Silverado, and Express/Savana vans.
  • Programmed 12662677 ECM for 2016 Chevy Silverado and GMC Sierra 2500/3500 with 6.6L Duramax engine.
  • Programmed 2016 Duramax ECM 12662677 for a Silverado or Sierra 2500/3500, showing the main connector ports.
  • Programmed 2016 GM 6.6L ECM 12662677 for Silverado, Sierra, and Express vans.
  • Programmed 12662677 ECM for a 2016 GM 6.6L Duramax engine, ready for installation in a Silverado or Sierra truck.

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