Detroit Diesel DDEC IV ECM Repair Service. Part Numbers: 23519307, 23519308. Restore your original Detroit Diesel DDEC IV Engine Control Module (ECM) with our professional repair service. Designed for Detroit Diesel Series 60 12.7L engines, this service provides a cost-effective alternative to purchasing a replacement ECM. Our technicians diagnose, repair, and fully test your ECM to ensure reliable operation. Since your original module is repaired, no additional programming is required after installation. Detroit Diesel Series 60 12.7L. Professional ECM diagnostics and repair. Retains original engine settings. Fully tested before return. Cost-effective alternative to replacement. Helps reduce vehicle downtime. We diagnose and repair the module. The ECM is tested and verified. Note: This listing is for a repair service. You must send your original ECM for repair.