The C16 7CZ uses the same 70-pin ADEM III module as the 3406E and C15, so it is in our fastest lane: 3 to 5 days on the bench, programmed back to your engine serial, lifetime warranty.
Failed flash recovery available.
On every Cat 70-pin ECM we repair, we upgrade the injector drivers for durability and replace the internal battery.
Sale through October 31: $525 on every Cat 70-pin repair (regularly $745). 40-pin and 120-pin repairs stay $745.
Same electronics as the 3406E and C15, same failures, same fixes.
What you see: the battery went dead on the truck or machine, or it got jump started, and now it cranks and won't fire, or it won't do anything at all. It ran fine before the battery died. This is the classic ECM failure.
The quick check: turn the key on and watch the dash. The check engine light should come on for a few seconds. If it never lights up, there's a good chance your ECM is not waking up.
What we do: check the ECM fuses and battery cables first. If those are good, send the ECM in. We get it powering up again, test it on the bench, and send it back programmed to your engine.
What you see: A miss or dead hole that stays after an injector swap.
What's happening: Injector driver failure inside the module.
What we do: We rebuild the driver circuit and bench-fire every channel.
What you see: No tool will connect to the ECM.
What's happening: Data-link circuit failure.
What we do: We restore the data link on the bench so the module can be read and programmed.
What you see: Dead key-on, or stalls when hot.
What's happening: Internal supply or cracked-joint failure.
What we do: We repair at the component level and thermal-cycle the module on the bench.
What you see: Several 5-volt sensor codes together that do not clear.
What's happening: The sensor supply regulator inside the ECM has failed.
What we do: We repair the supply and verify every sensor channel.
Don't see your exact symptom? Send it in anyway. We bench-test every unit before we tell you what's going on, and if we fix it the diagnostic cost you nothing.
Give us your engine serial prefix and we know which module you have.
| Arrangement | ECM generation / connector | Our bench | |
|---|---|---|---|
| 7CZ | ADEM III, 70-pin | 3-5 days | Start a 7CZ repair → |
Self-ship free, or add a prepaid UPS label. Drop-offs in Princeton, MN by appointment. Include your engine serial number.
You pay the repair price at checkout. If we can't fix it, you get a full refund. We test it and tell you what failed, usually in 1-2 business days.
Whatever it needs to run right again. 70-pin units are 3 to 5 days on the bench. Need it sooner? Add rush priority at checkout and your ECM goes to the front of the line.
Programmed to your engine serial, tested here before it ships, lifetime warranty.
If yours is beyond repair, or the truck can't wait: remanufactured, bench-tested, programmed to your engine serial, 2-year warranty. Built to order unless the listing says In Stock; usually ships within 10 business days, often sooner.
On a 70-pin unit, you get a full refund when it is a normal failure we could not fix. We fix the large majority of the 70-pin ECMs that come in. The exceptions are when the ECM itself is the reason: a board that is cracked, burned, or eaten by water and corrosion, a proprietary chip that is no longer made, or damage from an earlier repair attempt. In those cases, and if your ECM tests good with nothing wrong, $150 covers the bench test, the written report and the return shipping, and we refund the rest. You can also put what you paid toward a tested exchange unit.
$525 flat, bench fee included. You pay the repair price at checkout, before you ship it. If we can't fix it, you get a full refund, unless the board itself is damaged beyond repair, a part is no longer made, or it tests good. Then $150 covers the bench test, the report and return shipping, and we refund the rest.
3 to 5 days on the bench right now, plus 1-3 days return shipping.
Yes, to your engine serial, and bench-tested before it ships.
Yes. Remanufactured 7CZ units programmed to your engine serial, 2-year warranty. Built to order unless the listing says In Stock.
Related: Cat 70-pin ECM problems & symptoms · All Cat ECM repair · 3406E ECM repair · C15 ECM repair · C12 ECM repair · C10 ECM repair
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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