We repair Detroit Diesel engine computers from the DDEC VI up through the MCM 2.1. That covers the Series 60 DDEC VI, and the MCM and ACM on DD13, DD15 and DD16 engines. If yours cannot be repaired, we can put you in an exchange unit and move your programming over to it.
Searching for Detroit Diesel ECM repair near me? Most of ours arrive by UPS from other states. Ship it in from anywhere, or drop it off in Princeton, Minnesota by appointment. 15 to 30 days on the bench, $745 flat with the $350 bench fee included.
These show up across these ECMs week in and week out. If your symptom is on this list, that is good news. It means we have seen it before and it is fixable.
What you see: a dead hole, misfire, or rough run that follows the ECM and not the injector.
What's happening: the driver circuit inside the module that fires the injector has failed, so the ECM stops driving one or more injectors.
What we do: we rebuild the driver circuitry and bench-test every injector channel before it ships back.
What you see: the ECM will not talk to DDDL or your diagnostic tool, or the module is completely dead.
What's happening: the internal power supply or communication section has failed, often from age, a voltage spike, or moisture intrusion.
What we do: we trace and restore the power and communication side on the bench so it can be read and programmed again.
Don't see your exact symptom? Send it in anyway. These are the common ones, but these ECMs fail in other ways too, and we test every unit before we tell you what is going on.
Self-ship free, or add a prepaid UPS label. Drop-offs in Princeton, MN by appointment.
$350 bench fee, credited toward the repair. We test it and tell you exactly what failed, usually in 1-2 business days.
Injector driver repair, power and communication restoration, whatever it needs. Standard turnaround 15 to 30 days on the bench.
Your programming stays in the ECM. It comes back bench-tested and backed by our 1-year repair warranty. Plus 1-3 days return shipping.
If your ECM cannot be repaired, or you would rather not wait on a repair, these are the other two ways we can get you running.
A remanufactured unit, bench-tested, with a 2-year warranty. Exchange units start at $1,295, plus a $500 core deposit you get back when your old ECM comes in. The price for each part number is in the list below.
We need your VIN to program it, and it ships programmed to your truck.
Buy an exchange unit and send us your old ECM. If it still communicates, we copy your factory calibration over to the replacement at no charge. If it does not communicate, we program the replacement to your VIN.
On a repair there is nothing to transfer, because your programming stays in your own ECM.
Remanufactured, bench-tested, programmed to your engine, and backed by a 2-year warranty. Built to order.
Verified Google reviews
"Mike does great work and sent my repaired ECM back to me right away. Saved me thousands of dollars vs. using the dealer. Would recommend to anyone that needs prompt repair."
"From ECMs and harnesses to straight-out cutting counter bores in-frame for us. Great shop — and a great person to have in your pocket."
"Highly recommend these guys! Fast turnaround — I had my ECM back and repaired by the next day. Will definitely do more business in the near future."
"Michael is a diesel guru. He made my rig scream and had it done when he said, for the price we agreed to. I'd highly recommend him."
"Mike is highly knowledgeable in all areas of diesel repair — from mechanical work to advanced electrical diagnostics. You can count on him to get the job done right."
"Mike is a very professional and skilled mechanic. I highly recommend him for any of your needs."
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