$1,295
+ $500 refundable core deposit (90-day return window). No-deposit option available at checkout: send your core first.
Usually ships within 10 business days, often sooner
2-year transferable warranty · Programmed to your truck at no charge · Core deposit refunded on return
Failed flash recovery available. Start a repair →
Prefer to fix your own unit?
Flat rebuild $675 (bench fee included) · 15 to 30 days on the bench — you keep your original ECM.
Start a repair instead →
Flat rebuild $675 (bench fee included) · 15 to 30 days on the bench — you keep your original ECM.
Start a repair instead →
| Part Number | 3408426 |
| Brand | Cummins |
| Condition | Remanufactured |
| SKU | NL-CUM-3408426 |
| Warranty | 2-year transferable warranty |
About the Cummins ISM (CM570) ECM
The 3408426 is the engine control module for the Cummins ISM (CM570).
These early-electronic ISM and ISX controllers ran fuel injection and timing in the early-to-mid 2000s.
We repair this ECM on the bench and supply tested, remanufactured exchange units, programmed to your engine and ready to install. Send yours in for repair, or order an exchange unit and send your old one back as the core.
Remanufactured Cummins ISM ECM, P/N 3408426. Programmed to your CPL #, HP, torque, rear ratio, tire size, and transmission. Plug and play install. Standard programming included — usually ships within 10 business days, often sooner. 2-year warranty. Core exchange required. $500 core deposit refunded when your old ECM returns within 90 days. ECM module family: CM570.
Common Cummins ECM failures we repair
We fix these on the bench every day. Wiring and connectors can mimic ECM failure, so we test first.
- Injector driver faults. The circuits that fire the injectors burn out or go weak, so the engine misfires, runs rough, or loses a cylinder. We rebuild these driver stages on the bench.
- No communication. The module stops talking to your scan tool over J1939, usually from a failed internal power supply. We track the dead spot and bring it back.
- Heat, vibration, and intrusion damage. Cracked solder joints, blown fuses, and oil or moisture in the board cause faults that come and go. We repair them at the component level and bench-test before it ships.
Repair instead of replace: Cummins ISX ECM repair →