06-07 DURAMAX 6.6L LBZ CHEVY 3500 ECU ECM ENGINE COMPUTER 12606127 VIN PROGRAMED Featured Products 6L3A-12A650-SA

6L3A-12A650-SA

One connector does have a small chip in the plastic - see pictures

7U7A-12A650-DHE

6U7A-12A650-FGC

Some of those tests are listed below: Gauges pass start up sweep test and are functional (including TACH) - see below pictures of cluster during sweep test

06-07 DURAMAX 6.6L LBZ CHEVY 3500 ECU ECM ENGINE COMPUTER 12606127 VIN PROGRAMED Featured Products 6L3A-12A650-SAPart Number 12606127 You must match this exactly! These units do require VIN programming and are not plug and play. We can program the VIN for you, just let us know your VIN at checkout in the "Message to seller" box. Tech Notes ECU tested and does have communication and a properly functioning processor! Fitment Interchange You must match your part number exactly as seen above. If any numbers are off compared to your original it will not work