OEM Engine Control Module ECU GM Silverado Sierra 2500 3500 Diesel 6.6L 12720006

12 Silverado Sierra 2500 ECM Engine Control Module (6.6L Duramax) (OEM 12648344)

16 Silverado Sierra 2500 ECM Engine Control Module (6.6L Duramax) (OEM 12660134)

2017-2021 GMC Sierra 2500 3500 6.6L ECU ECM Engine Control Module OEM 12688333

19 GMC SIERRA 2500 6.6L ENGINE CONTROL MODULE ECM 12686363

21 GMC SIERRA 2500 ECM ENGINE CONTROL MODULE 6.6L DIESEL 12711509

11 Silverado Sierra 2500 ECM Engine Control Module (6.6L Duramax) (OEM 12644941)

14-15 Gm Silverado Sierra 2500 3500 6.6l Engine Control Module Ecm Ecu 12667377