Programmed 2012-2016 Silverado 3500 ECM 22819494 | VIN Matched

Restore Peak Performance to Your Silverado HD

As a technician with over two decades of experience under the hood, I know how frustrating it is when your workhorse truck starts acting up. A failing Engine Control Module (ECM) in a 2012-2016 Silverado 3500 can cause a cascade of problems, from a simple check engine light to a no-start condition that leaves you stranded. This isn’t just an inconvenience; it’s a hit to your productivity and peace of mind. Your truck’s ECM is its brain, managing everything from fuel injection and ignition timing to transmission shifting. When it falters, the whole system suffers.

This replacement ECM is the definitive solution to get your truck running right again. The biggest hurdle with ECM replacement has always been the programming—a step that historically required an expensive trip to the dealership. We eliminate that completely. Before this module ships, we flash it with the latest official GM software, precisely matched to your truck’s Vehicle Identification Number (VIN). This ensures seamless communication between all vehicle systems and restores the original performance and efficiency specifications. This is the same process a dealer would perform, but delivered directly to your door.

Is Your Silverado Showing These ECM Failure Signs?

• ✔ Check Engine Light is on with codes like P0601 (Internal Control Module Memory Check Sum Error) or P0606 (ECM/PCM Processor Fault).
• ✔ The engine cranks but refuses to start.
• ✔ Unexplained drop in fuel economy.
• ✔ Rough or inconsistent engine idling.
• ✔ The transmission shifts harshly or at the wrong times.
• ✔ Stalling for no apparent reason, either while driving or at a stop.
• ✔ Failure to pass an emissions test.

A Straightforward Guide to Installation

Replacing the 2012-2016 Silverado 3500 ECM is a job most DIYers with basic tools can handle. Since this unit arrives programmed, no special scan tools are needed for the installation itself. Just follow these general steps:

1. Safety First: Always disconnect the negative terminal from your truck’s battery before starting any electrical work.
2. Locate the ECM: On these trucks, the ECM is typically found in the engine bay on the driver’s side, near the firewall or inner fender.
3. Disconnect Connectors: Carefully release the locking tabs and unplug the large wiring harness connectors from the old module. Inspect them for any corrosion or damage.
4. Remove Old Module: Unbolt the old ECM from its mounting bracket. There are usually a few bolts holding it in place.
5. Install New Module: Mount your new, pre-programmed ECM onto the bracket and securely fasten the bolts.
6. Reconnect Everything: Plug the wiring harnesses back into the new ECM, ensuring they click securely into place. Reconnect your negative battery terminal.
7. Final Check: Some vehicles require a security relearn procedure, which can often be done by cycling the key. Turn the key to the ‘ON’ position for 10-15 minutes, then ‘OFF’ for 10 seconds, and repeat two more times before attempting to start the engine. Your truck is now ready to go!

Verified Fitment for Your GM Vehicle

While this is a primary solution for the 2012-2016 Silverado 3500 ECM with the 6.0L engine, this versatile module is also a direct replacement for a wide range of other GM vehicles. Please verify your part number and application from the list below. This unit replaces part numbers: 12668866, 12668994, 12643636, 12663405, 12670335, 22819494, and 12692200.