Cummins Celect, Cummins Celect Plus ECU Systems
Detroit Diesel DDEC II, DDEC III, DDEC IV ECU Systems
Caterpillar ECU Systems
Allison Transmission ECU, TCU Transmission Control Unit Systems
Allison Transmission ECU, TCU Transmission Control Unit Systems

Welcome. Our company rebuilds and remanufactures Electronic Control Modules (ECM), and Engine Control Units (ECU) for a wide array of diesel engine applications, including Cummins and Detroit Diesel. ECM King is a pioneer in this field, rebuilding & repairing Heavy Duty ECMs for diesel engines since 1985. We also can adjust and modify ECMs for performance applications and regular road applications. Your engine will produce more HORSEPOWER and TORQUE - without any other modification. There are certain programs that allow us to set the horsepower to a limit.  Please check availability. ECM King also burns custom EEPROMs.  Give us a call today, toll free!


ECM/TCU Testing!
Not sure if you're ECM or TCU is the problem? Let us test it at no additional cost to you. Find out quickly and easily!  Leave the troubleshooting to us!

FREE Diagnostics!
Are you a do-it-yourselfer? Let us help you get your rig running right by trouble-shooting your ECM free! A free diagnostics check will help you determine where the problem is and how to repair it properly.

FREE Performance Advice!
Would you like to optimize  diesel engine performance and minimize energy costs? Let our trained Master Technologists help!  They can recommend a custom programmed EPROM for your ECM and get optimum performance from your rig.








Experienced Diagnosis & Rebuilding of ECMs
(Since 1985)
Heavy-Duty ECM & TCU Diagnostics, Repair & Rebuilding
Diagnosis by Certified
Master Mechanic
HD Truck & Machinery Repair
Digital Dashboard
School Bus ECU/TCU
Heavy Duty Oil Field Equipment
Rebuild Transmission
Control Units
We Burn Custom
Automotive Recyclers Association
Trucker's Choice











Hand Cleaner and Skin Balm Now Available!


Copyrightę 2010 ECM King